Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c358fda211d9d5…

MALICIOUS

PDF

75.8 KB Created: 2021-03-30 03:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbe9f6ed04922df66d85a4a8ab4fc320 SHA-1: 9e6f1bd51c691013bd0224a91ff540c45337ef22 SHA-256: c9c358fda211d9d51d427eb7c858503d32aa2b74ff9abf107a07eb4321fbb9b7
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to a 'personality generator', which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=5e+npc+personality+generator
    • https://cdn-cms.f-static.net/uploads/4376866/normal_603b9e334cbad.pdf
    • https://vajugape.weebly.com/uploads/1/3/4/7/134767319/603acce4b.pdf
    • https://cdn.sqhk.co/wufevinek/LgcUjjF/okay_boomer_gif.pdf
    • https://cdn-cms.f-static.net/uploads/4383147/normal_5fd8f6731ccb7.pdf
    • https://static.s123-cdn-static.com/uploads/4374956/normal_5fc9f8451082c.pdf
    • https://digakope.weebly.com/uploads/1/3/5/9/135974251/5ab8561b1c2279.pdf
    • https://cdn-cms.f-static.net/uploads/4408323/normal_605f012aaf60f.pdf
    • https://cdn.sqhk.co/wujamufaw/iibZWhf/fruit_pop_candy_factory.pdf
    • http://ralugugifoxatir.scienceontheweb.net/english_for_auto_mechanics.pdf
    • https://cdn-cms.f-static.net/uploads/4370288/normal_6017550241157.pdf
    • https://cdn-cms.f-static.net/uploads/4486051/normal_605e1161985ef.pdf
    • https://cdn-cms.f-static.net/uploads/4373511/normal_6025844405393.pdf
    • https://katifakemu.weebly.com/uploads/1/3/1/3/131381151/6150860.pdf
    • https://cdn.sqhk.co/vugujebeku/ghaLZTO/99530367754.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_6840ce8676734c6fb114c38149b5a2b7.pdf?index=true
    • http://dojafeduzig.myartsonline.com/bilbao_tourist_map.pdf
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_702d7a357a36403b9439b3b1810f6699.pdf?index=true
    • https://f62823ea-e863-4eb7-bd7c-e3bac0139ff1.filesusr.com/ugd/8c639a_a103de1de265438aae4a16a77d2d38b4.pdf?index=true
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_ddbc80f263e04bc58e27601857f8b760.pdf?index=true
    • http://sofibimibojas.myartsonline.com/nakezufog.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b5.bin
69cf97af419e846178ee94b4a3f98142bb4a4b6fff9c52134cf1066e2e4e7785
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 5232 bytes
font_01_sfnt_off0000fb9a.bin
25b7f0f042a2d8b2e7c42be6fe8bf5b3dbaa0f688232f305e5b15ac6cd703ea8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9A 10812 bytes