MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external domains, including suspicious ones like pelibifir.ru. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it was generated by a tool rather than being a legitimate document. The presence of embedded URLs and the link farm nature strongly suggest an intent to redirect users to malicious sites for phishing or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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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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://pelibifir.ru/strik?utm_term=linksys+router+ea6500+firmware PDF link annotation
- https://cdn.sqhk.co/vovawumusa/igid8ja/88721811576.pdfIn PDF document text
- http://seplafond.xyz/66493762821kg5jc.pdfIn PDF document text
- https://lekusimije.weebly.com/uploads/1/3/1/3/131383821/ziture.pdfIn PDF document text
- https://cdn.sqhk.co/wekaradukuve/Wied7eP/3117492222.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413983/normal_6016a8d3b78e3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460476/normal_5ff3f11615717.pdfIn PDF document text
- https://cdn.sqhk.co/toxodabatot/5jfXjiJ/55030755528.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4488807/normal_6000fd5f909f6.pdfIn PDF document text
- https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/bunibisij.pdfIn PDF document text
- http://znakomstva69.space/sagacious_crossword_answerjf7qe.pdfIn PDF document text
- http://com-signto2.xyz/spaceflight_simulator_1._5._02_modc7c3t.pdfIn PDF document text
- http://lbaranaydin.com/bose_companion_2_speakers_for_tvam91f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/134c82b1-9c96-4e73-9c39-322a60078ab0/king_andrew_the_first_political_cartoon_meaning.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/199e46d6-4a5d-4926-81eb-46b7d8e9a760/23292835808.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05a9b17e-2726-4791-b78a-e0e0e77a4d32/how_to_defend_in_street_fighter_4_online.pdfIn PDF document text
- https://s3.amazonaws.com/lekelepowo/maxobenewuni.pdfIn PDF document text
- https://s3.amazonaws.com/kobivimelelo/casio_g-shock_ga-100-1a1_battery.pdfIn PDF document text
- https://s3.amazonaws.com/jewizopukuni/kenmore_elite_front_load_dryer_thermal_fuse_location.pdfIn PDF document text
- https://s3.amazonaws.com/simujix/49769067028.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd96c30d-bbb1-4353-bd3a-9995204c2b7f/7-2_word_problem_practice_similar_polygons_worksheet_answers.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010099.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10099 | 5500 bytes |
SHA-256: ade0439d68541491f80ab7b1fcbc83065e07e341a4be7e56f7b3ded239d25146 |
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font_01_sfnt_off0001135c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1135C | 10516 bytes |
SHA-256: 2b2a82a3c3661a4d2f959bd69001182e556683194c4c4114c441ed25e1be74c3 |
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