Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb2899a9403045b…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 21:19:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5481745fc92865db1c27aeca88f48576 SHA-1: 639111a547f846139af6b6a63273d003d9806920 SHA-256: ceb2899a9403045be517cdc8308f0504d176bf8f14912a997e301794f21bc5b8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/award?keyword=monitor+card%25C3%25ADaco+polar+a300 PDF link annotation
    • https://jewadasin.weebly.com/uploads/1/3/4/6/134604584/277842.pdfIn PDF document text
    • http://tivazaluweze.iblogger.org/12713411160.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/kafufixilalivor_bomew_dagugepes_favesosirewasax.pdfIn PDF document text
    • http://stroymarketmetal.ru/super_slow_motion_s10rwimo.pdfIn PDF document text
    • https://bejamipoxef.weebly.com/uploads/1/3/5/3/135318713/jakatidojomumikogak.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/D5lgid0/parumo.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/9Rd9zcO/amc_309_cinema_9_showtimes.pdfIn PDF document text
    • http://pogadai.xyz/buvamefobilegelhjwon.pdfIn PDF document text
    • http://newyearshop.site/just_dance_4_redeem_code_jd4-nkido.pdfIn PDF document text
    • https://cdn.sqhk.co/bepotedaxus/hgShdiT/bingo_pinball_repair.pdfIn PDF document text
    • https://cdn.sqhk.co/sunawopi/Fiefpjc/96186306539.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kolenexe.epizy.com/47146447769.pdfIn PDF document text
    • http://gulogomolu.rf.gd/linux_command_line_os.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_off0000cb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5C 5252 bytes
SHA-256: 7ae9b556d7520a8adc6cfe058213ab4a1af175e5e2c9f371c078ef61dfd59839
font_01_sfnt_off0000dd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5B 15340 bytes
SHA-256: 0ca0f9b670cca8988bab90f13265a8e08940df9374185ef1047a5966d37e49a7