MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish users. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs further support the link farm and potential phishing or SEO poisoning attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://synerhu.ru/uplcv?utm_term=bematech+lr2000+pdf PDF link annotation
- https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/24mrkl6aertik7eesjtrkhg1j5/morexipun.pdfIn PDF document text
- https://myphi.biz/nbloom/fckuploads/file/lademaveli.pdfIn PDF document text
- https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0f0dd7eba---46614417067.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/bq2ft6ml29bpbsb9fnb6684gl4/filalafarak.pdfIn PDF document text
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf92fcafef---daxebenilawad.pdfIn PDF document text
- https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/071eab8ecb0dc7b35b0d5e8a861b820c/tidivazujireletegotor.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/pctuuo5724m7bm8buf8gfauvru/sigisutebexagipisej.pdfIn PDF document text
- http://whalesart.com/uploadfile/file/%5C/2021051618563944.pdfIn PDF document text
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b538b8892---wibunabigifozinofokonasot.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/68bf56c8f443bb0b32daf82966195ab3/78198731926.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160845425620c0---darusez.pdfIn PDF document text
- https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/3cd7601dbbdee4c7844129e8039aea3f/63018236718.pdfIn PDF document text
- https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/323fe12b437d185a13073876c8c93cdb/logunetijaroredebisije.pdfIn PDF document text
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160788bfda2d55---wojapik.pdfIn PDF document text
- https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/05916ae96452aa42a1ae73c6f6481367/88792539247.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000d085.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD085 | 5540 bytes |
SHA-256: bc03d6bbbe69aa153199ad78409c14b302dd2052e38a99a4d88a5c8235f80c91 |
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font_01_sfnt_off0000e32e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE32E | 11388 bytes |
SHA-256: 73db3d6dae19f732ef6f5b2069a6d1fff740c167559f3b338c743fb60150fd55 |
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font_02_sfnt_off000109de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109DE | 16200 bytes |
SHA-256: ab31bad50d1fabf409272c8d40ebe0962ad1e89052e15148f5d4edc4e75f9fc9 |
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