MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a malicious PDF, as indicated by ML classification and ClamAV detection. It contains numerous links pointing to compromised WordPress sites and other domains, suggesting a phishing or malware distribution lure. The presence of external URIs and link farms on potentially compromised or disposable hosting further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://cructi.ru/uplcv?utm_term=customer+service+riddles+and+answers PDF link annotation
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8e59a93b7---bilikunovudowogizotewaz.pdfIn PDF document text
- https://mitrasuksesku.com/userfiles/file/47124288347.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615392124fb33---89395074959.pdfIn PDF document text
- https://ntct.dz/ckfinder/userfiles/files/veliwanujorigamijujoxis.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/23ab02nlk9nfqje96hoosv8ber/6275200649.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/afqf8ftoothdjic1b0ko8isd42/lodulogikapixujamefosin.pdfIn PDF document text
- http://gazosilikatnn.ru/uploads/files/peposaf.pdfIn PDF document text
- http://varadimasszazs.hu/uploads/files/dudopakomemat.pdfIn PDF document text
- https://inoxquochoang.com/app/webroot/files/images/pages/files/61633853087.pdfIn PDF document text
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/161333bbc1fa82---nogijewujesozejupifo.pdfIn PDF document text
- http://z-him.ru/userfiles/file/nejetituvotosudafemo.pdfIn PDF document text
- http://nawooelcs.com/upload/userfiles/2021/09/files/210926112056.pdfIn PDF document text
- http://pioneerbuzz.net/userimages/gevune.pdfIn PDF document text
- http://luatsugiadinhviet.com/upload/ck/files/37570729373.pdfIn PDF document text
- https://kme.pl/global/app/webroot/uploads/file/16315442420127.pdfIn PDF document text
- http://tai-yang.tw/taiyang/upload/file/88760165466.pdfIn PDF document text
- https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/12953862852.pdfIn PDF document text
- http://pzhjintai.com/upload/files/dukepazizotowejokej.pdfIn PDF document text
- http://portamarioarchitetto.eu/userfiles/files/42276292449.pdfIn PDF document text
- https://djennebeads.com/nbloom/fckuploads/file/rexojoxabeb.pdfIn PDF document text
- http://www.hebrewforreadingcomprehension.com/content/38354427377.pdfIn PDF document text
- http://cluster006.ovh.net/~greeters/be/ckfinder/userfiles/files/zibemositasa.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_off0000aca2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xACA2 | 10816 bytes |
SHA-256: b7b831e1b76c8641c98033731294ff24c7ae51da93ed37e0446a9904bcf48a90 |
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font_01_sfnt_off0000c5ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5AC | 15020 bytes |
SHA-256: 373baa0963d66bd9c89a531f525d09fdb11b46a093ae27b7cd5e065416c1fda4 |
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font_02_sfnt_off0000eb78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB78 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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