Malicious PDF — malware analysis report

Static analysis result for SHA-256 390629be0878747c…

MALICIOUS

PDF

72.8 KB Created: 2021-02-11 18:43:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 05d899a1e3923e9ebe843c22cb15829b SHA-1: 52c9ed98ec976142876a0c21bcb0300e56f56902 SHA-256: 390629be0878747cf3d1aa7af1bd24cbb88308e8f30500d26553dbbb848fcb07
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://seumenha.ru/wix?keyword=ib+chemistry+study+guide+oxford PDF link annotation
    • http://wekeb.space/holden_barina_2006_manualbiq4r.pdfIn PDF document text
    • https://cdn.sqhk.co/rupomotiz/jdJajfm/ninjago_masters_of_spinjitzu_episode_18.pdfIn PDF document text
    • http://kneeksi.ru/flu_shot_fact_sheet_2018f7a6u.pdfIn PDF document text
    • https://motapesuna.weebly.com/uploads/1/3/4/7/134749044/rufobobijajuf.pdfIn PDF document text
    • https://cdn.sqhk.co/lexewagoz/Ljfgfje/32585203254.pdfIn PDF document text
    • http://copyrightprivacy.site/rakinokisesuvolobofubupoja73k7.pdfIn PDF document text
    • http://hesap-al-sat.com/vubanupx0nm.pdfIn PDF document text
    • http://heleogose.online/49088473727siln0.pdfIn PDF document text
    • http://titanovyi-filtr.ru/rasusakutedufepamiff2.pdfIn PDF document text
    • https://cdn.sqhk.co/saguregifu/UhaLiho/exploration_and_colonization_quiz_1_req.pdfIn PDF document text
    • http://baltika-trans.ru/39292749205zr6zm.pdfIn PDF document text
    • http://bigno.space/67634492765afc0.pdfIn PDF document text
    • http://hookup757.fun/annihilation_jeff_vandermeer_fre55w9j.pdfIn PDF document text
    • http://telemprom.xyz/nikon_d5300_manual_focus_videoj9ba6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF12 5440 bytes
SHA-256: 0c56468a10ce3478dd3942a0b2b2b1dccc7b213135969b0a9e35ffc3dbe2c6a5
font_01_sfnt_off0000f17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17B 10912 bytes
SHA-256: 0319a21a5e279d7df98dc8da4f878517073b30eb7523d4257ddf6adb94138a71