MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it contains a link farm and prompts the user to disable security software, a common tactic to facilitate payload execution. The document also instructs the user to use a password for an archive, suggesting a multi-stage attack where the actual malware is hidden within an encrypted archive.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 8
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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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Security software disable instruction high SE_SECURITY_BYPASSDocument instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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 http://ankaser.com/userfiles/file/mowusag.pdf
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/7c3h9vt0flhc8l2hf27atjdpq5/48774173349.pdf
- http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/mejuwunulukisonirax.pdf
- https://castilloexterior.net/ckfinder/userfiles/files/18313463297.pdf
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/abcnlqq0llh2mi88jmctrf8a76/56769744685.pdf
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082191cc025f---24438377470.pdf
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/b7fd868ab8db587e08d958651a5c7baf/94377070121.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16078b9df776cf---72888068709.pdf
- http://93564497.com/userfiles/fokutu.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c83f5cabf8---51802417758.pdf
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160789631e4489---mugura.pdf
- https://abe-rdc.com/userfiles/file/rovojama.pdf
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160964bdced292---6803657775.pdf
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/8659bac5ca586179435d813a5692d932/rujimapuwipew.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=kmspico+office+2013+activator+windows+10
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001005f.bin93968383f4ed22fb9d510cf5faccd3fa45b37517250d4ee3741e82028035b2de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1005F | 5880 bytes |
font_01_sfnt_off00011473.binc6e17877cc9e4f05c143de016f86ca434f3c863a42bc1c60304e9df3669eb975 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11473 | 11556 bytes |
font_02_sfnt_off00013b50.binf267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B50 | 16376 bytes |
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