Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e21d149f23412be…

MALICIOUS

PDF

76.8 KB Created: 2021-04-04 09:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 560a1e67ee7166944075975449405bbe SHA-1: df461241e402695d7203041353e3c285cf76ca2d SHA-256: 0e21d149f23412be097518da296b9ea7a937badcef26d29d446adcb600840b76
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/strik?utm_term=navy+seal+trident+pin+image PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444113/normal_60260ebd27fc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411501/normal_6041f7ad04ce8.pdfIn PDF document text
    • https://wojewifonutej.weebly.com/uploads/1/3/4/8/134883442/6296321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505687/normal_604d0bec05d9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451930/normal_5fca516b595ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5fd7e3953f629.pdfIn PDF document text
    • https://kijapadawoli.weebly.com/uploads/1/3/4/9/134900431/bogov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pubopelej/cover_page_template_word_document.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c023682-c653-462b-9bd2-b752da660a3a/sexidoketoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/contrarian_trading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03c66e4d-0aa3-428b-a07a-239707053d60/34887616323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83fda169-f494-40d9-bfed-1c5e3a60ead0/wepejexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b5f37a0-ee81-4818-82a9-99defd6f9767/machine_learning_in_python_and_r_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/ketevoxotem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7fd573c-2d75-420e-88f9-0de58a5bcb54/troy_bilt_lawn_mower_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/how_do_you_charge_a_ravpower_power_bank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c15075-bbe7-4dc1-a883-82be1b3f4c5e/what_is_four_p_in_marketing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712ce3df-8468-4480-9a86-8f018b0a04b8/how_much_does_it_cost_to_paint_a_cessna_310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71bdd288-cee8-445c-8cd3-a5f2f44317e4/podawalojixoluf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d2bc0a6-6514-483b-9ad9-14ffa9a0021f/69511374346.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 8

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_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 5412 bytes
SHA-256: 926fe57060daaa45b079aeb895d0253f2f8429efca4d13c42c9c9ac0ca225d3a
font_01_sfnt_off0000fff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF4 11176 bytes
SHA-256: 5725bb3f45e72f0aa621f0d7e9a37a8a710a6bb46d329d8c91e4a4b4644816a9

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