Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e2e53a9d7bc340…

MALICIOUS

PDF

71.2 KB Created: 2021-02-14 08:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c8010ebb8266a1fc8034ead62671479a SHA-1: f73e5157efcc2e2ced4e9456278627493120ed1c SHA-256: a4e2e53a9d7bc340b0ace02ea560bf0bb60d8b5d65b5e4324805a6ec2349296b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=postal+exam+710+study+guide PDF link annotation
    • https://cdn.sqhk.co/nezafomura/jgjiVid/commuter_bike_shoes_waterproof.pdfIn PDF document text
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/ratiwisapot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5ff7d4526f10a.pdfIn PDF document text
    • http://bitasifo.22web.org/mulosivizet.pdfIn PDF document text
    • https://cdn.sqhk.co/sofuxizago/QAhh3jg/xmeye_not_working_on_ios_14.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/5jj5jjx/juwewivokoveseni.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/wF0hfhe/fitness_health_and_nutrition_time_life_books.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/ejahgiK/jexatononojuwadunenudu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421776/normal_5ffe6f8ee67c6.pdfIn PDF document text
    • https://gadonivoxe.weebly.com/uploads/1/3/5/3/135331758/435c25069355.pdfIn PDF document text
    • https://remogomati.weebly.com/uploads/1/3/4/7/134748537/dovuwowulilune_lupeboxino_sosekawusubi.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/MnXhaC3/mopisifime.pdfIn PDF document text
    • http://zunikezat.22web.org/cytology_quiz_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419413/normal_5fff4d4baddab.pdfIn PDF document text
    • https://xewurilarigifu.weebly.com/uploads/1/3/4/2/134236076/bagowoguv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nikavavufuxirel.epizy.com/edexcel_a_level_business_revision_guide.pdfIn PDF document text
    • http://foxadawimuwewar.epizy.com/25003895153.pdfIn PDF document text
    • http://jasixerebav.epizy.com/ledemukiwegezewisoxe.pdfIn PDF document text
    • http://lezebotetojezaz.epizy.com/24425667122.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD931 5492 bytes
SHA-256: 386fd97661b2411a04eae01617096687fdb34678ca9005d8e5177002388ac27b
font_01_sfnt_off0000ebf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF0 10492 bytes
SHA-256: 782bcf8cddc041e504776024d15c2c3755e65c182ecddefaf18e596767a41774

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