Malicious PDF — malware analysis report

Static analysis result for SHA-256 6270f5b69ac770df…

MALICIOUS

PDF

113.6 KB Created: 2021-06-12 16:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9b76f16e48fbee16e77c214f841022c0 SHA-1: 7f364128129d10747f024f6f6e4c9bac8c76885b SHA-256: 6270f5b69ac770df3fc052ec2e5b1ab3a53fc79dd49724a6ad3da5b19b733a79
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress installations or disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'Attaullah khan ke all song' and application metadata, which likely serves as a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://catamma.ru/uplcv?utm_term=attaullah+khan+ke+all+song PDF link annotation
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/7c4b5bdbcd789a7b4c2d6670e7fd290e/96642672117.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/8id85m5fohmg5opp6p3kp3tndo/62626062923.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/o8vlc6ferca708os6caqdb7kur/35001115184.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/1e19539b321a0aaa24fd19ea76d79d53/79623241913.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/85136909025.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/nng7vk6akfa04plf24be5ggmm0/1176318312.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0d8b95539---nuwufosanatogiruvowo.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/8e18600e5c8a0b58a3afc86755cbc4ea/61871854610.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f19a926ab---80332174587.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/86d6cc13b00a07c3dcd795ed70318e27/82363930746.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/8jmi389m3ajsqfc1dgommgns4o/doxivowisiragotegoboxete.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc5cd3b28e---babivuzeririk.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/jl7eoh4634inrt3n9dfj9o3f0s/ragamuwuvopufizabogupe.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/dkn4qd09gsrifmqa6pcuqu2s87/birujupebajodamedaferota.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/hpt9lriafne61blakqr6qc014c/28962446636.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/357ecc9f5303d53b62ef8beb7936cba9/pepaxonibaped.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000174f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x174F9 4740 bytes
SHA-256: 230e943253281816a3eea3ace1a8e7b1e79ecc4d8ebc40fffec0fa28a0e6b6aa
font_01_sfnt_off0001850d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1850D 11176 bytes
SHA-256: 029af6bd11fafa0b28113cb54634b75febd7b0ea8f2418e1869d3e038dad1fa5
font_02_sfnt_off0001ab2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB2B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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