Malicious PDF — malware analysis report

Static analysis result for SHA-256 4239d9e49a54e120…

MALICIOUS

PDF

69.4 KB Created: 2021-02-05 12:33:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0573608a8955f2a6f54e558884597a81 SHA-1: c5753cd239d2df281089cc91d2cd5ab9b9106a07 SHA-256: 4239d9e49a54e12068aa24bd1a5f426d18ad5eecd3f1d3fd124c8875332477b8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=discus%20fish%20care%20sheet PDF link annotation
    • https://cdn.sqhk.co/wogefosa/hjiFheq/cnc_machinist_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/jgFrjfO/48979898079.pdfIn PDF document text
    • https://bejivuvepezera.weebly.com/uploads/1/3/4/4/134437422/4638763.pdfIn PDF document text
    • http://vittorguxx.site/bmw_k1200lt_owners_manual_free_download9vm79.pdfIn PDF document text
    • https://kaxupigokib.weebly.com/uploads/1/3/5/3/135324743/4602835.pdfIn PDF document text
    • http://letgtma.bid/jofebie62dv.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/glgcvgi/piffle_a_cat_puzzle_adventure.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/ivhE7JU/best_fake_nails_to_buy_at_walmart.pdfIn PDF document text
    • https://xekotoruwogobib.weebly.com/uploads/1/3/1/6/131606212/9232329.pdfIn PDF document text
    • https://fafamamijusoma.weebly.com/uploads/1/3/4/3/134371196/poxowunagofawimo.pdfIn PDF document text
    • http://gufutaca5.xyz/runatamitiwinc2ms.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/piwupevivotixi/vopojanesowopazeguse.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/challan_form_punjab_police.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/85695945577.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/gaming_zone_apk_free.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_off0000d50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50D 4936 bytes
SHA-256: 55dc88cf99b02f9fbde95e116eb4b00248b7af526e19c83dc0837c8c36e9cf8c
font_01_sfnt_off0000e5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DA 10256 bytes
SHA-256: f31e3ce43ee1255aa96250eed6b7c1d4cbbc36625e8a72e144ab404d122e99a0