Malicious PDF — malware analysis report

Static analysis result for SHA-256 14158bb596f0b28c…

MALICIOUS

PDF

84.3 KB Created: 2021-06-01 14:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f85884c933f7a0b9f13df6b552b6349e SHA-1: 4129d2b132f2f3547dc565d87cb3e668a7ad25e5 SHA-256: 14158bb596f0b28c7358e63b03ea548a382aeaabfc712f45b729b3fe89aeeb7e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or malware distribution. One prominent link points to a URL suggesting a game hack, which is a typical lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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.
  • 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://infrive.ru/pbw?utm_term=spider+man+unlimited+mod+hack+apk
    • https://static.s123-cdn-static.com/uploads/4367952/normal_5feb92f07d3c3.pdf
    • https://cdn-cms.f-static.net/uploads/4476281/normal_606598ee90739.pdf
    • https://static.s123-cdn-static.com/uploads/4379605/normal_5ff7a5ae348bf.pdf
    • https://vufofameti.weebly.com/uploads/1/3/0/8/130874118/zubunupazujizegix.pdf
    • https://cdn-cms.f-static.net/uploads/4489848/normal_602797f935008.pdf
    • https://dezuximoloxesar.weebly.com/uploads/1/3/1/4/131410685/973ba26f3d0a.pdf
    • https://cdn-cms.f-static.net/uploads/4491152/normal_602b921d8e97f.pdf
    • https://wivapofeselaf.weebly.com/uploads/1/3/5/3/135317026/gupuxa_xevekekerileja_losajamitunuj.pdf
    • https://putesoborufo.weebly.com/uploads/1/3/0/8/130814126/8649205.pdf
    • https://dotiduku.weebly.com/uploads/1/3/4/2/134234749/bejanikeganemene.pdf
    • https://bexitapanirid.weebly.com/uploads/1/3/0/9/130969950/9355764.pdf
    • https://muborite.weebly.com/uploads/1/3/4/4/134442605/3901998.pdf
    • https://static.s123-cdn-static-d.com/uploads/4418391/normal_60b288ac0b9a5.pdf
    • https://kutinimi.weebly.com/uploads/1/3/4/6/134608846/82b7cb.pdf
    • https://jomixemaletid.weebly.com/uploads/1/3/4/6/134659672/pinixowuxaluziba.pdf
    • https://pakoverixofe.weebly.com/uploads/1/3/4/7/134771358/tunuvur-zegegexebegafuf-wimapitusemuj.pdf
    • https://tuvajidemagik.weebly.com/uploads/1/3/2/6/132681445/xukiku-pogulef-degug-namitaxiropot.pdf
    • https://cdn-cms.f-static.net/uploads/4475194/normal_603789d89b22d.pdf
    • https://static.s123-cdn-static.com/uploads/4418987/normal_5ffe51df762e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a41fd208-d8b4-4bb2-a3d6-d0b77983a852/who_will_die_in_the_promised_neverland_season_2.pdf
    • https://uploads.strikinglycdn.com/files/8d19e1d7-c9d5-42f2-8f5e-2bae74af2631/is_there_a_usa_today_paper_today.pdf
    • https://uploads.strikinglycdn.com/files/5e3cf473-4932-4f25-88b4-e489c5aaa135/5913663192.pdf
    • https://uploads.strikinglycdn.com/files/c8e0c97b-dbc1-497a-822c-eeeb6b4a2103/emotionally_focused_family_therapy_interventions.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b2.bin
f91d2cee498097ac1f03077bef5c38889285c535d5bb9b62e9d5631904666989		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B2 3252 bytes
font_01_sfnt_off0000f056.bin
d4e702a86e366294b3ffd0e8be4f69e2d7b708e5e9f6104c67fbe6754a021309		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF056 5300 bytes
font_02_sfnt_off0001022d.bin
f6a005d75016461be7b17a52202d9e6d882ad0f74be3327c6c3e2bd83179b26e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 14808 bytes
font_03_sfnt_off00012d59.bin
3af247bf813e594b0975b8ede984bcbf73f6f29be5035c6453e04cca4ecad560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D59 16244 bytes

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