Malicious PDF — malware analysis report

Static analysis result for SHA-256 63a1310800bd7cca…

MALICIOUS

PDF

65.2 KB Created: 2021-02-11 10:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 2f61e6781472e47058294018fd9b59d4 SHA-1: 4a3fea0a9ab9822329cd7df636dbd382aaf6c818 SHA-256: 63a1310800bd7cca03789056d3bdffd7c80da00abf6f7e990401afed4b936e0d
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://druttle.ru/123?utm_term=blank+piece+of+paper+image PDF link annotation
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/jetivivile.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/rjjQgiO/fepeledebawagivezodogajaj.pdfIn PDF document text
    • https://dapinolun.weebly.com/uploads/1/3/4/7/134762022/3827171.pdfIn PDF document text
    • https://jojusilinu.weebly.com/uploads/1/3/4/3/134343509/bakagogiti_baladiwe.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/gPgdjdI/30557681028.pdfIn PDF document text
    • https://cdn.sqhk.co/xumifutave/ihUjbhd/galaxy_defense_mod_apk_1._1_7.pdfIn PDF document text
    • https://silorofolukut.weebly.com/uploads/1/3/4/2/134265947/nonuge.pdfIn PDF document text
    • https://luvokivimowef.weebly.com/uploads/1/3/1/6/131607407/lukoj.pdfIn PDF document text
    • https://gaxurorilapuw.weebly.com/uploads/1/3/2/3/132302857/3671140.pdfIn PDF document text
    • https://nifakisafuzum.weebly.com/uploads/1/3/0/7/130775286/a8ce2f7.pdfIn PDF document text
    • https://nedamekiwuj.weebly.com/uploads/1/3/1/3/131379605/wetibapaji-xobujegoguduse.pdfIn PDF document text
    • http://marketop.club/bawitupejep2ykux.pdfIn PDF document text
    • http://businesslinecenter.com/bobinadora_manual_de_motores_electricosyuatg.pdfIn PDF document text
    • https://xibomuwupipufa.weebly.com/uploads/1/3/5/3/135389044/8065574.pdfIn PDF document text
    • https://gitujibexilen.weebly.com/uploads/1/3/1/4/131406430/84069a6f1.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_off0000c380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC380 5268 bytes
SHA-256: 72874b97a8fe66d047c40944376359d1a7af21c30f8d99ac36486e2589cf7902
font_01_sfnt_off0000d560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD560 10200 bytes
SHA-256: 01aaa023b997347472b7913ff8244a0b0177c087109c9249fb79323eae468d39