Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf70774b6a0d38f…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 21:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 575ed00195f012f1443cf4af71e464e0 SHA-1: 6a7ae65875208c36004cc4fc3540c6c051bfa643 SHA-256: 9bf70774b6a0d38fa4a1d977ac200eb5ea93080ba3b59fc1f170696fcce92d6e
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://golowaki.ru/award?keyword=what+business+level+strategy+does+nike+use PDF link annotation
    • http://suzofovolavuk.scienceontheweb.net/how_to_read_a_manual_j_calculation.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495058/normal_5ffcb941b9b16.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/bekuton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409248/normal_5fcd0945a55be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_60358542694ef.pdfIn PDF document text
    • http://mangalvpodarok.ru/49155866270mpyyr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_5fda86b082a6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_60349c965455b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gajibapudi.rf.gd/jabogedidigirekez.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/android_developer_cv_format.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/ziwade.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/24342472494.pdfIn PDF document text
    • http://pavemadimakok.epizy.com/fawole.pdfIn PDF document text
    • http://mukesowumoj.rf.gd/77968210627.pdfIn PDF document text
    • http://bifakafuwal.rf.gd/pofamuluwos.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/nugemimatoz.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_off0000dfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD1 5464 bytes
SHA-256: 0240ab35972b5088bbf7a2929a9389656dc7151e41f83717391f6a369d2a5ee1
font_01_sfnt_off0000f272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF272 10436 bytes
SHA-256: f4f383aa2f8b8f97dd510f6b0361565c993b51207a594ee4ee87ebbae30c6591