Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b166f48f88f5a75…

MALICIOUS

PDF

70.4 KB Created: 2021-01-22 07:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 552bd734f6dcabafef00ae75b84f734f SHA-1: 16a8c46d618fb3edbe687f27a980444177f4eb42 SHA-256: 1b166f48f88f5a7572dbdaf2e6477bb6b12bc5bca05a794ab628718ccdac623f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=gunblood+unblocked+google+sites PDF link annotation
    • http://velixone.66ghz.com/autonomous_things.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/ejiTjf8/color_of_the_night_movie_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374207/normal_5ff69429b4de7.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/edqhguf/sopateguguk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465691/normal_5fdb3d64307e6.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/via9Hjb/71134052267.pdfIn PDF document text
    • https://site-1197027.mozfiles.com/files/1197027/harvard_business_review_managing_your_boss.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5fd676f689f0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450424/normal_5fec9872a5d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5fd9b8e3c6c4e.pdfIn PDF document text
    • http://www.weebly.com/link/HXvO3gIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fudewalazakukug.epizy.com/suvivikoloxal.pdfIn PDF document text
    • http://besipopi.epizy.com/ana_catalina_emmerich_antiguo_testamento.pdfIn PDF document text
    • http://rulumagevamed.epizy.com/cycle_film_song.pdfIn PDF document text
    • http://folizel.epizy.com/canon_eos_6d_instruction_manual.pdfIn PDF document text
    • http://misugivunuzu.epizy.com/live_sports_streaming_app.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_off0000d89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89A 5036 bytes
SHA-256: 577b463a48e50575e1393578ba74460de6765c5510edc54caa901a4f3f86550e
font_01_sfnt_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 10516 bytes
SHA-256: bedc5f4359bc4b284bfe9f5f073735b4a0e110a2a88885f7fa599b175505ef9b