Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b2763a6e599c70…

MALICIOUS

PDF

72.2 KB Created: 2021-04-04 17:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 47649c455326baa310b3468a7867bee5 SHA-1: 9657a7d87f54c9155793f88aa675abc1c9798edd SHA-256: e0b2763a6e599c70bf63f579d7a3b3f8e13f32946cc1d107a0e95a1a621e887f
186 Risk Score

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 6

  • 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.
  • 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://kuzutuzo.ru/aws?utm_term=1996+jeep+cherokee+xj+fuel+pump PDF link annotation
    • https://doxazefeseremef.weebly.com/uploads/1/3/4/7/134764644/419830.pdfIn PDF document text
    • https://genopajixon.weebly.com/uploads/1/3/1/4/131452954/4515388.pdfIn PDF document text
    • https://magenudelekoj.weebly.com/uploads/1/3/5/9/135975171/815fa7e6.pdfIn PDF document text
    • https://bebekibuxa.weebly.com/uploads/1/3/5/9/135993907/lukatibipejufam.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/7227110.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/GM0ezif/zombie_craft_survival_3d_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gelowidabik/aoFCNz2/42853603200.pdfIn PDF document text
    • https://wowavimisaken.weebly.com/uploads/1/3/0/8/130814021/86f5caedd31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://47e4df30-8702-49a4-8bd5-327e1546ff06.filesusr.com/ugd/379272_e94ef0dfd3e2488da85a1dd88844b4bb.pdf?index=trueIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_d4b970a37d2c4dd6ba0ac397ca4952c3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/how_many_amps_should_a_refrigerator_compressor_pull.pdfIn PDF document text
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_7d36556308074001a3f97414870d45c2.pdf?index=trueIn PDF document text
    • https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_265a891511ec4cb28c08e89acc20a515.pdf?index=trueIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_b9a6f02a9c7b49bca4b7d2290b88a25f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/54644092286.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/long_sleeve_tee_shirt_template.pdfIn PDF document text
    • https://71e5fc8e-cc9a-4633-96c3-2c70acd464d0.filesusr.com/ugd/f08e01_82b4244ede6c490fa503fbcfe5fbbef9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gupojakami/canon_vixia_hf_r800_price_in_pakistan.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_off0000de9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9A 5344 bytes
SHA-256: aefdfdac0f9710a36c0c8c4c0fa62944eba8e41c1d04db8cbd8d92dcb5191802
font_01_sfnt_off0000f0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AA 10296 bytes
SHA-256: 1d9ccbd7c95b9758bb2799ef43c17b0f50bb159ca9e632969999ab77998533a8

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