Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc2a01f7b75aac4…

MALICIOUS

PDF

92.6 KB Created: 2021-02-27 08:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 15502bef533c946b07eab622567a36d5 SHA-1: 0e5bfc1fbad7041b3b724df6d0ea98c97f084e83 SHA-256: 8fc2a01f7b75aac4a390c6757039d527c1a7949ac5d69ce0b46919f3c030f0e8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one specifically pointing to a 'how to reset powerbeats wireless' lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of numerous links on disposable hosting further supports a malicious campaign.

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://bologen.ru/123?utm_term=how+to+reset+powerbeats+wireless PDF link annotation
    • http://nanamojuvimujo.medianewsonline.com/the_lion_the_witch_and_the_wardrobe_cast_of_characters.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/bunker_hill_safe_95824_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393362/normal_5fe2790557f04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_600beef77038d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5ffc994e5cb4c.pdfIn PDF document text
    • http://copyrightnotices-form.com/retirement_withdrawal_calculator_excel_templateo7vd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_6029d3e400cec.pdfIn PDF document text
    • http://lozajakar.iblogger.org/pride_and_prejudice_movie_1940_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499633/normal_5fd7ce8431cf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419826/normal_600eac05c060f.pdfIn PDF document text
    • http://shopsupergood.site/how_to_install_a.dishwasherrhn39.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/dimitilugifajiwebuvox.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/goguvowexewafu.pdfIn PDF document text
    • http://rajukilodagoje.mygamesonline.org/23029169794.pdfIn PDF document text
    • http://ru-dev.xyz/o_que_so_os_coliformes_termotolerantes26i64.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/nimuwet/despicable_me_3_video_song.pdfIn PDF document text
    • http://miviloliwibo.rf.gd/applicant_verb_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/rurusixovo.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/wusewikevotewitavab.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_off00012c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2D 5004 bytes
SHA-256: e147dc29c4f3ec68ddd17d61321de02876438e2d37d0b014cf24ad698c686649
font_01_sfnt_off00013d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D46 12220 bytes
SHA-256: bf87c21acb908eabf69a4474f1436d37f453f1973a32d29d516d90b08ea1a986