Malicious PDF — malware analysis report

Static analysis result for SHA-256 7879418c0a7def2d…

MALICIOUS

PDF

76.5 KB Created: 2021-03-01 18:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3bcad6787c2c599fd920619e88f8fbdf SHA-1: d0136198f4d9c234dd7c55f99431df881ef948fe SHA-256: 7879418c0a7def2d2ba1e4490cb7b82eaae5283f3341d90a696e4a399f0eac78
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://nipisod.ru/wb?keyword=what%20to%20use%20for%20cabinet%20backing PDF link annotation
    • http://lorakuze.sportsontheweb.net/tijowo.pdfIn PDF document text
    • https://sonenekuz.weebly.com/uploads/1/3/5/3/135302947/petotonofu.pdfIn PDF document text
    • https://xevivipemasap.weebly.com/uploads/1/3/4/4/134481894/puzagibik-kewag.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/gYv6hda/jukaduk.pdfIn PDF document text
    • https://rapowude.weebly.com/uploads/1/3/1/4/131454581/zavav.pdfIn PDF document text
    • http://gerawat.22web.org/xunudodemo.pdfIn PDF document text
    • https://cdn.sqhk.co/bamikalagov/gefheif/tasopanudisixevotagova.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/ijhf9L3/kaiser_permanente_pay_login.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/hYbjaif/55982912812.pdfIn PDF document text
    • https://cdn.sqhk.co/wevodapobu/eUgeidf/rumble_hockey_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://limufewugewo.rf.gd/tribe_sebastian_junger_summary.pdfIn PDF document text
    • http://nuforikoxiv.epizy.com/horror_movies_2017_free.pdfIn PDF document text
    • http://balazetesu.epizy.com/java_for_macos.pdfIn PDF document text
    • http://refowokewip.rf.gd/formation_adjointe_administrative_laval.pdfIn PDF document text
    • http://jesebikalag.epizy.com/supercapacitors_book.pdfIn PDF document text
    • http://xozodijavoxovun.epizy.com/metformina_efeitos_colaterais_gravidez.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/tasar.pdfIn PDF document text
    • http://vogafaxusa.epizy.com/59810102493.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_off0000ef9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9A 5328 bytes
SHA-256: 6daa1aa735e54056987d64a79919ab20d1782252a1443d7d5363d580f4181f1f
font_01_sfnt_off000101c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C9 10224 bytes
SHA-256: b5a20a31e8bd1cb24361684e15381ddf10b7134036aaddcb46fe543079f865ea