Malicious PDF — malware analysis report

Static analysis result for SHA-256 c313ba6d6fad7996…

MALICIOUS

PDF

80.7 KB Created: 2021-04-04 02:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1a6009a6ac6a6aca49591d55e72d7b00 SHA-1: f0374888b82eab413d7d571355a550f9e34b619c SHA-256: c313ba6d6fad79963345cebc4be84c5ea1de26c3ae014a041055da5e4fe2e42a
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting it's a lure for a link farm, specifically targeting searches related to 'Michel Foucault analysis'. The presence of numerous external links, many hosted on disposable domains like 'sqhk.co' and 'cabinetsop.xyz', strongly suggests a phishing or SEO spam campaign designed to redirect users to potentially harmful content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/strik?utm_term=what+is+an+author+michel+foucault+analysis PDF link annotation
    • https://cdn.sqhk.co/seseniluvus/flBk3hh/wheel_smash_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/cgihiia/vitedijisoz.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/PLhhje9/8504168539.pdfIn PDF document text
    • http://cabinetsop.xyz/80119053096b1qqh.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/GihdZiR/41295358869.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/KrjcOid/baixar_traffic_rider_infinito_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/iehhhem/zombie_tsunami_redeem_code_list.pdfIn PDF document text
    • https://cdn.sqhk.co/pepegizeso/fifjesN/32150628576.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/halggOq/norwegian_cruise_line_jobs_from_home.pdfIn PDF document text
    • https://cdn.sqhk.co/nunamarajop/Bjhjbjf/tulixujovidixexuniza.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/i9iiYev/39213271906.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/gdAcjeR/haccp_guidelines_for_kitchen.pdfIn PDF document text
    • https://cdn.sqhk.co/jivumigen/Aa4igoC/fudilonerive.pdfIn PDF document text
    • http://vamoktin.ru/kusolojosigelufuvu6y74m.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/ggij3mL/amazed_of_meaning_in_urdu.pdfIn PDF document text
    • http://salonapp.xyz/schaums_differential_equations_solutions_manual6ycvr.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/iaie6hf/vabezamegesalu.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/ehgifig/amazon_alexa_deals_of_the_day_uk.pdfIn PDF document text
    • http://lisolu.org/manually_update_chrome_canaryzqru1.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/gazijewevan/sevunis.pdfIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_d3d784ad9e1245eba3aae8ae6a5b6d2f.pdf?index=trueIn PDF document text
    • https://caf0f927-206f-4b4e-aa34-0dd3da53679b.filesusr.com/ugd/83d902_b371c4d8a8de4c0484ea48f34f54b45f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sabegokek/lorisewituvifepatipuluz.pdfIn PDF document text
    • https://f8d82b49-d438-4da2-b906-f876cb6fe635.filesusr.com/ugd/12dc78_a2d12a917238496faca858d0a894f37d.pdf?index=trueIn PDF document text
    • https://631ffb88-cf2d-4844-8d6b-9338a1b21cc5.filesusr.com/ugd/d24e6f_23a2f6603b454bb795719381d2a821bf.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 5236 bytes
SHA-256: e32ba2a60c1a5db7ed8883f4bd1e02e636b0d180dd6b2366dfb2b6f8e5561ae2
font_01_sfnt_off0000fc12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC12 10484 bytes
SHA-256: 163590b8003e3c285a96bb445e1a83c80cde038a08e8f8d073b08a97534b1182
font_02_sfnt_off0001201d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1201D 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

Open this report in the interactive analyzer, or submit your own file for analysis.