Malicious PDF — malware analysis report

Static analysis result for SHA-256 14303f51ac18a803…

MALICIOUS

PDF

78.4 KB Created: 2021-05-10 16:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ce5de2d81940451f07c19b6e44383b5f SHA-1: 26e9b70bad05929d2f83ef6662d41e15974e23b7 SHA-256: 14303f51ac18a803f538133dee78e7f57ffa28dd58e909184fa38618bedbc25d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one specifically pointing to 'seumenha.ru' and including a search term related to appliance error codes, suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://seumenha.ru/strik?utm_term=bosch+axxis+washer+error+code+f43 PDF link annotation
    • https://cdn.sqhk.co/taxuvoguraji/t1jdhjI/51651572454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_6044d9eeea42a.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/NUge84u/small_yellow_paper_gift_bags.pdfIn PDF document text
    • https://cdn.sqhk.co/fepexeguma/oijnBge/55042067600.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5fe38a100430e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_60679db83fcb5.pdfIn PDF document text
    • http://ighelpcenter.xyz/pejotavorofepibasi3hf2e.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/c7Ajbid/batupubodifagapitezobimu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406482/normal_6040dc2977c1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_60045e5ded9ad.pdfIn PDF document text
    • http://reznitskygallery.com/72718733956pnchh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_8395346492ca4813a754296443a2b62d.pdf?index=trueIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_e71f8d5eb2ca47e8a7f97efb92049876.pdf?index=trueIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_a585478cd4534a79943c36c272dfd16c.pdf?index=trueIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_cea989713e284809a1888a06e6812e97.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4536e11b-ee6f-4d94-945a-24861ac953f9/fender_mustang_ii_amp_power_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57a4672-d86b-4000-a287-f5f4b9c5e808/64680439287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1f046e0-4500-44a2-a116-bedaf1f1e9c4/how_to_program_avital_4103_remote_start.pdfIn PDF document text
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_b4d995f89c6948af9621bfe612836eda.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/444f0ac7-c45d-4e82-a2ce-d724bf472254/92745681010.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 5536 bytes
SHA-256: 69bf6deea7a5bc06ff87c98cb3a9c57a69a6bb94a20c23495de81366ad5ad0e1
font_01_sfnt_off0001062c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062C 10664 bytes
SHA-256: 886b4d45661e06c99813e77e31bbfa2c0654dd317d6ff3073150e9d6d6cd2b70

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