Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0d9addf5dff752…

MALICIOUS

PDF

72.9 KB Created: 2021-02-25 18:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: eacf8bc94bf17b625cfde0a1c66b3ed3 SHA-1: 479bb04f0af41f5c8b70e4d1a839073dde81bf54 SHA-256: db0d9addf5dff7526c1981af80c89c967ddf82ec8ca34f1bf129049d5f2db83b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=how+much+does+a+first+year+plumber+apprentice+make PDF link annotation
    • http://secureappeal.com/the_monologue_audition_karen_kohlhaas57bzu.pdfIn PDF document text
    • http://demask.space/34821603932jhy3g.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/rujog.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/read_autobiography_of_a_yogi_online.pdfIn PDF document text
    • https://xukonixivuki.weebly.com/uploads/1/3/0/9/130969652/30bb8b.pdfIn PDF document text
    • http://hristogrigorov.com/gurevosesovaneveji20slz.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/d99d4ba.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/i1gjaUl/chain_strike_wikia.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/jc1GgiA/final_fantasy_portal_app_points.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/wurivuve/get_to_know_synonym_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/cybex_600a_lower_body_arc_trainer.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/punenefokupefujorito.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_off0000de7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7F 5756 bytes
SHA-256: 5cc87b088c7e7966497473f55515582cf03365cc579892cd35a3f512c153db5b
font_01_sfnt_off0000f1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F7 10828 bytes
SHA-256: a425f9551f13662be4392c546f887f1db9d46a70980e67c850a64b3dcc1a16eb