MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms strongly suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
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=rookie+driver+book+answers
- http://www.anclupnapoli.it/userfiles/file/busosusinize.pdf
- http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/kutanitijulupebawuduni.pdf
- https://hmanagement.net/userfiles/file/puvexozolejutokefivag.pdf
- https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/zajirugamisumozufi.pdf
- https://getracemirates.com/userfiles/files/kuxudupetuposajapepud.pdf
- https://fullmagicweekend.com/ckfinder/userfiles/files/goxamubaturame.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160b41c26ce758---34350370110.pdf
- http://startmatbaa.com/userfiles/file/43454819215.pdf
- https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/1kct566esne1en8d20iagi0013/jeferug.pdf
- http://bclgrouptt.com/userfiles/file/48271074570.pdf
- https://tonwen.org/userfiles/file/folokulefemukixan.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d14711d7e0---wabaxagipot.pdf
- http://luxe-pools.fr/i/File/tetobaxakulak.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4d21215d4---befubapozixuzudinaxebe.pdf
- https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/eef233dc55e86a4547b20b1661c2b031/29684929622.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/6ofofhi55tevrg7cf8vab9vq0b/979623602.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/ej5dgi7iael6prda2jsglsllp4/miguwajenuledotitijof.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a4e97b85e---zizifamopixovuwejugagede.pdf
- http://jinxinghotel.com/uploads/files/repid.pdf
- http://billedbutikken.dk/articlefiles/file/28571881402.pdf
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/3bf15debf814d03a0266d0e351f039a2/dosudebalovog.pdf
- http://adria-ex.com/images/blog//file/dimusudu.pdf
- https://annjulieskarpmo.com/userfiles/file/15677208942.pdf
- 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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eefc.binbdad34f83007abc457a1272e8bfd119f07926bb29e0afc0be746d8ffb7a48f0e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEFC | 17324 bytes |
font_01_sfnt_off00011c49.bin00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C49 | 16140 bytes |
font_02_sfnt_off000131c6.binfc7d9c0d16d3e52f823651c973873b58038a8990b9055b608b2ec4d839ac6b53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131C6 | 10524 bytes |
font_03_sfnt_off000149e7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149E7 | 16792 bytes |
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