Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dee0f83832033e2…

MALICIOUS

PDF

70.9 KB Created: 2021-02-02 15:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2cf0419347c877498fa7e1e8495cfc17 SHA-1: 934c093386ba5132149bb88acf8084741c333a8e SHA-256: 9dee0f83832033e2f6de7f5ae1b612e3c9b6f9fc0b3afdadaffd30da0847affa
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=ielts+reading+exam+answer+sheet PDF link annotation
    • http://bella24.xyz/75550054577s05v3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_600fa027a67a4.pdfIn PDF document text
    • http://talakam.space/world_war_z_botsxs7e6.pdfIn PDF document text
    • https://cdn.sqhk.co/gediwuwanol/iHghion/gusutowamugamuvosomi.pdfIn PDF document text
    • https://cdn.sqhk.co/vurifozi/fhaTihh/80224524728.pdfIn PDF document text
    • http://onenature.space/tajupinomokauldg.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/PzHhhYH/93849695616.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kidejuwukaj.epizy.com/karuzajebaminepuz.pdfIn PDF document text
    • http://lodavudomajip.epizy.com/free_conjunction_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/habitos_alimenticios_oms.pdfIn PDF document text
    • http://zawagebojirowe.rf.gd/17651344050.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/filudunerox.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/bukaxokinixopune.pdfIn PDF document text
    • http://sekudevabadim.rf.gd/27532400311.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/declaration_of_independence_discussion_questions_answers.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_off0000d7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BC 5336 bytes
SHA-256: 4b9ec08c2caeefd96c2a64a04d50be1a314d03a387da093b0c12be83de0e9a60
font_01_sfnt_off0000e9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C5 10916 bytes
SHA-256: 6580b6f85f2cec9e3f73d7dc258ce77f585e6569778b412fae9002e9bc2cfcb6