Malicious PDF — malware analysis report

Static analysis result for SHA-256 6deddc92dccafdf0…

MALICIOUS

PDF

64.7 KB Created: 2021-02-17 13:34:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5a5bd95d17dae6f1872ec4e718b0460f SHA-1: c849ce0894b96cd47e1f7fd7beff156c6cf40510 SHA-256: 6deddc92dccafdf0c32d88be6ba20781a0c0856c5067027cb3c1c0ade3e24374
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged by ML and ClamAV as malicious, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to a 'Panasonic telephone manual'. The presence of numerous disposable domains and link farms further supports a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=panasonic+telephone+manual PDF link annotation
    • http://raifaisentapp.online/hydraulic_relief_valve_functionwafq0.pdfIn PDF document text
    • http://doctora.club/safifowazujufonefufc9d1l.pdfIn PDF document text
    • https://cdn.sqhk.co/zizaratijiga/1hjmujg/jiwetagejilewilita.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/H7Tnijd/61040792304.pdfIn PDF document text
    • http://topvideo.design/family_farm_seaside_game_walkthrough99u37.pdfIn PDF document text
    • http://fbcopyright-center.com/libro_soy_sano_medicina_naturalcmk5a.pdfIn PDF document text
    • http://harmony-market.ru/gogigojowimapukoeigea.pdfIn PDF document text
    • http://idealica-it.website/expanded_form_worksheets_for_1st_grade25ijc.pdfIn PDF document text
    • https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/perovata_lokelelume_bujasetatu.pdfIn PDF document text
    • http://vijufik.iblogger.org/kodikasoguvedobowef.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/gcXjdy3/pesapizomugurinabu.pdfIn PDF document text
    • http://violet-cinema.ru/best_buy_nycc_20204johm.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://kiluwuw.epizy.com/75646722578.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/32014614475.pdfIn PDF document text
    • http://pitefabe.epizy.com/vojiriwotetevewolagave.pdfIn PDF document text
    • http://sulunaza.epizy.com/wimojubusodokuv.pdfIn PDF document text
    • http://dujepuxa.rf.gd/free_validity_sensor_software.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB498 4960 bytes
SHA-256: 9d05c76c71ec7fc640a3acc4c07b49c949572f8fe654719b961c2f7c273df470
font_01_sfnt_off0000c546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC546 10340 bytes
SHA-256: 44a11688733b0e7f45750285fd246e300153a170fc9e19ac25a079b6d7ad7f7c
font_02_sfnt_off0000e7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EA 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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