MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress upload directories or disposable hosting, suggesting it's part of a link farm designed to distribute malicious content. The heuristic 'SE_CALLBACK_LURE' indicates the document likely prompts the user to call a phone number, consistent with callback phishing or tech-support scam tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://allytemp.ru/uplcv?utm_term=roulette+royale+mod+apk+android+1 PDF link annotation
- http://posicert.com/upload_fck/file/2021-9-14/20210914071036367229.pdfIn PDF document text
- http://personnelstrategies.net/userfiles/file/24657523326.pdfIn PDF document text
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1614552685146c---vuwatiz.pdfIn PDF document text
- http://demkapi.com/resimler/files/veborosajas.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614334df9c2b0---jojulijawu.pdfIn PDF document text
- http://sz-nuoyi.com/Upload/file/2021091407083284371.pdfIn PDF document text
- https://yucekalipmakina.com/tsrm1/img/userfiles/file/19792047580.pdfIn PDF document text
- http://kiuanai.com/userfiles/file/femiwalejolafaw.pdfIn PDF document text
- http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/kiwifexusomifofetizukemur.pdfIn PDF document text
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16136898464ccf---37891200916.pdfIn PDF document text
- https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/45804784163.pdfIn PDF document text
- http://tko.wavedev.net/img/files/files/sovivatibux.pdfIn PDF document text
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/161336be4cfe0f---47126739753.pdfIn PDF document text
- https://benhgout.net/uploads/Files/file/wufaz.pdfIn PDF document text
- http://www.bash.cl/media/file/juwugaxijevilow.pdfIn PDF document text
- http://szm.hu/userfiles/file/zudejis.pdfIn PDF document text
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ac96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC96 | 10788 bytes |
SHA-256: 13c8c3f500ce0a046f55b807e18a899bd88a44bda4d30c93f111e45972b24ef2 |
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font_01_sfnt_off0000c57d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC57D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000dd8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD8F | 17140 bytes |
SHA-256: bd2f0609519e3f4b825e703d2a1b6ce372a64a841288919d0bcf4b8f270558f5 |
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