Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e68141ab5bb142b…

MALICIOUS

PDF

68.2 KB Created: 2021-03-04 04:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 79e440ff93fb9e9c301a7c72baf6dcc2 SHA-1: 5c342356c3b30c587dbdaec198ba092558a5b14d SHA-256: 4e68141ab5bb142b91f8a2949d2ecb7de4a73508962a3100ecdbc74d373e766d
186 Risk Score

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
  • 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://baarspo.ru/award?keyword=libro+de+ingles+basico+de+augusto+ghio+pdf PDF link annotation
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/lidetew-pidopalesenodi-giwiti.pdfIn PDF document text
    • https://cdn.sqhk.co/kabawamurelo/hgiddjd/wsop_texas_holdem_poker_free_chips.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/nCcSzih/950288125.pdfIn PDF document text
    • https://ludatigesoz.weebly.com/uploads/1/3/6/0/136050408/d244461b2a5b38.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/hibPWgi/vedafodopagoligibakelive.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/gii9IvX/shaolin_kung_fu_forms.pdfIn PDF document text
    • http://nafesotarun.22web.org/mawanivubuzirupaxerulo.pdfIn PDF document text
    • https://motefeka.weebly.com/uploads/1/3/4/1/134108707/8585365.pdfIn PDF document text
    • http://jitaguzo.22web.org/pathfinder_kingmaker_companion_quest_rewards.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/vtev9ja/sleep_sounds_rain_and_thunder_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/gawisibiw/jg8TYDy/71315114377.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/ErXgfLw/vovedepif.pdfIn PDF document text
    • https://cdn.sqhk.co/pibexezases/Vhenwji/82726509677.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/voxulija/xokudarupapagimegasoj.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/adecco_salary_guide_malaysia.pdfIn PDF document text
    • http://mowelafawugek.epizy.com/61123857649.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C3 5496 bytes
SHA-256: 5ad92972a11f90adfbfa89bce911cf3205b4edf0304f38f21843d6793015ab31
font_01_sfnt_off0000dc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 11612 bytes
SHA-256: 9b9595d6bb2361b9ffaa3acc40ebd0b3fd723b698766d74ef1c1755783cc9762