MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic firings suggest the PDF acts as a link farm, pointing to compromised WordPress upload storage, and includes a callback phishing lure. Although no scripts were extracted, the presence of multiple embedded URLs and the nature of the heuristics strongly suggest a phishing or scam attempt designed to trick the user into initiating contact via phone.
Machine Learning
- Nyx PDF Classifier malicious score 0.9733
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a402c8b41c3---naguwokevirefij.pdf In PDF document text
- https://maspacientes.es/wp-content/plugins/super-forms/uploads/php/files/t8muo9kprfvgrccqmc1d2ufqrp/jinamanafagaxajop.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/db1b91dea856ef83ab1c5bcbfc37731c/lutaroxezivevenakixegamed.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea734214f2---45180222886.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/lnf6ridtpkpbsh9cph1jiaq6im/novowirupuzikidane.pdfIn PDF document text
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1607d61f7efdec---4157976314.pdfIn PDF document text
- http://web-news.eu/www/pkpar/userfiles/file/rakosuvilujupobujemi.pdfIn PDF document text
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160893fbc94f07---lonuxekakepuxuni.pdfIn PDF document text
- http://kaowei.tw/image/files/20210610_213254.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9c1866e9e---fenopadaxirupok.pdfIn PDF document text
- https://cornerstonelaw.eu/userfiles//file/35671099409.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a03ca8bd040---60858605968.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/440058298a1c40e10b1099f1d0a1400f/tutazeb.pdfIn PDF document text
- http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/30648568909.pdfIn PDF document text
- http://tokyoto.pl/UserFiles/file/94956729201.pdfIn PDF document text
- http://tuhs1970.com/clients/a/ac/acc339db084e87cdfae31a76a6c96f1c/File/tozepasakadezikalena.pdfIn PDF document text
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c51309759f---gemodokagorenoposivoget.pdfIn PDF document text
- http://rotang.net/userfiles/file/25883243484.pdfIn PDF document text
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/mu1kriuvtkslce5hvmvkm0ee45/vowuxesowaroze.pdfIn PDF document text
- https://evergreencans.com/userfiles/file/lofin.pdfIn PDF document text
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb2262aa27---wevudetivubewoxonodoseju.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/nadesaturevuwopadaretu.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/d73ad9c6425f5f2e2ed321e963047975/63828975394.pdfIn PDF document text
- http://01host.ru/userfiles/files/puposofezin.pdfIn PDF document text
- http://joyear.com/ckfinder/userfiles/files/wemot.pdfIn PDF document text
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c794169a8c---80769376650.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=mr+suresh+please+pickup+the+phonePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fe16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE16 | 10656 bytes |
SHA-256: ef3a4bc8073007328f75819738b09fb10b210d2c5e7560f38bed69a831d81a5b |
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font_01_sfnt_off0001167a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1167A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012e8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E8B | 17044 bytes |
SHA-256: 08e6282a151707f5892054a60d51022553a5c84e3d62919befa17916f0fc5bce |
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font_03_sfnt_off00014646.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14646 | 18584 bytes |
SHA-256: f80f56049d1cc9aa5fd96213decb2007d2e11cbc0935e14e2db5af6086afc2c2 |
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