MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm or redirection mechanism. The primary purpose appears to be directing users to potentially malicious external content, likely for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://archism.ru/uplcv?utm_term=history+books+pdf+in+english
- http://bakkervoorwinde.nl/app/webroot/files/ckeditor_files/files/28263247422.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1611898d557871---78628968558.pdf
- http://surtek.biz/image/files/20150319_042656.pdf
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609b88433b757---14128043572.pdf
- http://archidaldegan.eu/userfiles/files/56900952122.pdf
- https://readandenjoy.ae/userfiles/files/13502713489.pdf
- http://bukharaalpharetta.com/sites/default/files/file/86556520009.pdf
- https://pbchistoryonline.org/uploads/file/vokirun.pdf
- https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/71989607105.pdf
- https://cvsc.co/userfiles/file/21966601406.pdf
- https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/ug8iiqea81gtv8jpebihg19tpf/zodujakije.pdf
- https://phm.vn/upload/files/91265038067.pdf
- https://gamepinleri.com/calisma2/files/uploads/bogematavamaporub.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160850611bc74b---lutopofe.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/vbccbngri0s820drh6qdn3j945/miretigibupakanadera.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/6683bd17baa4273d2821a6b59de6c914/xibajezuzoro.pdf
- http://df-foundry.net/d/files/9633552656.pdf
- http://rld-carbon.ru/file/44752500175.pdf
- http://chinasoftcore.com/userfiles/file///lujenotavojex.pdf
- http://bjeclinic.com/ckfinder/userfiles/files/salowebizapebonagaxon.pdf
- http://solmoda.it/userfiles/files/nokaxomagam.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f544.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF544 | 16792 bytes |
font_01_sfnt_off00010d5b.bin1e23d0e535715e8b9157e4f78be793226fba11e64490bddfe11b73f3569de214 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D5B | 10952 bytes |
font_02_sfnt_off0001263d.binfe68e056ef40b0703d411c2444bd050d95979c7cd1f5eac2348e5cac9a693fa3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1263D | 18204 bytes |
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