Malicious PDF — malware analysis report

Static analysis result for SHA-256 634efd0e4323c739…

MALICIOUS

PDF

70.4 KB Created: 2021-02-28 15:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e3778c812a782487c2652022eb4bfc06 SHA-1: e50d06f338efec54969943c7fb2a4ca4b93e856e SHA-256: 634efd0e4323c739d4bf6ebaa3a42f42eb6aeabeecf97fa651cce5b0f97f768c
126 Risk Score

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://jumiwimov.ru/award?keyword=rinnai+rl94i+recirculation+pump PDF link annotation
    • http://lodomujimujug.mywebcommunity.org/kaliniditenopamuwu.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/misbehavior_of_markets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378605/normal_5feb585a42813.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375361/normal_5fe45bcd273d9.pdfIn PDF document text
    • https://cdn.sqhk.co/remonupode/hJkvqjg/best_free_2_player_games_on_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/1hddW1V/baby_phone_number_whatsapp_rashmika_mandanna.pdfIn PDF document text
    • https://cdn.sqhk.co/xagogudexo/chhfAjc/61790468164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_6022df9309b74.pdfIn PDF document text
    • https://cdn.sqhk.co/xurinuwame/HkLhfha/mumelobovesirej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5fdc6c467e71a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496360/normal_5fdf001ad0d2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fedfe189ce24.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/jjZuLja/torora.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mefinuxewo.epizy.com/gesixowep.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/xozikovarobujedoranutajo.pdfIn PDF document text
    • http://wiwazez.epizy.com/sopolofikekebotipibojegup.pdfIn PDF document text
    • http://jidabalelibixu.rf.gd/14075248758.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_off0000d7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BF 5152 bytes
SHA-256: f83ab6ae0886ed653b972cf7368d61fd42f17cd180d63931b06586accb81c16e
font_01_sfnt_off0000e941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE941 10284 bytes
SHA-256: 86cc71b8d83cdcd31e38567f975f9ee90e5f74098ae101365100923d54687884