Malicious PDF — malware analysis report

Static analysis result for SHA-256 a607168d3d55f88a…

MALICIOUS

PDF

74.0 KB Created: 2021-02-12 21:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: da4bf3ff95feb70e51a11a1d657382fd SHA-1: 610fc27bad9dcd30249a90f70d9e372d994ebf5a SHA-256: a607168d3d55f88acb517a5b97023d637ca7b04c8526a2d698e2a4a07a36bced
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baarspo.ru/wb?keyword=cuales%20son%20los%20anexos%20en%20un%20informe PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472185/normal_5fe473b5eaff0.pdfIn PDF document text
    • https://cdn.sqhk.co/xenekifa/Sgcgegf/79511579795.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/pekogexitonizekg4jmi.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/jc5Vxia/buyback_offer_letter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_601350307fd58.pdfIn PDF document text
    • http://ibkreactiva2020.com/makeup_kit_cake_maker_glitter_baking_gameslisks.pdfIn PDF document text
    • http://nat-fru.space/527639745311i34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417313/normal_5fd3a1a1901aa.pdfIn PDF document text
    • http://vikorurapufor.iblogger.org/1080p_video_converter_apk.pdfIn PDF document text
    • http://evakuator-uga.ru/36728815502lv35k.pdfIn PDF document text
    • http://titanovyi-filtr.ru/cambridge_md_weather_reporte9asl.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/vexosafugunu/30576615932.pdfIn PDF document text
    • http://vopodopo.rf.gd/game_bn_sng_cho_android_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/wupojizizeduxixup.pdfIn PDF document text
    • http://guxudapese.epizy.com/rilifofusojovik.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_off0000e32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32E 4888 bytes
SHA-256: 45491b8f71cd2f54dbe3f25c1eba5191662d57ee07d84f98c1627fd3aeab7cdc
font_01_sfnt_off0000f3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B7 11520 bytes
SHA-256: d6023c1c4dbe441945cab6906aa5feb57591b58f4bb18230895146e05e2e2b30