Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba8de181e470e88…

MALICIOUS

PDF

73.2 KB Created: 2021-02-01 17:00:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cff799fc2df2e22fdef70d8c54b59d8d SHA-1: 644f4b92baf8e18cf0c37fa4573e2245a9a66c7a SHA-256: 6ba8de181e470e88da62033f1e2693c2a4717ef9408c222bafc5c08ef8d3723d
126 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
  • 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://jacksth.ru/123?utm_term=bringing+down+the+duke+summary PDF link annotation
    • https://rujemezemomiwo.weebly.com/uploads/1/3/0/9/130969750/6466037.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/VBPjhih/12379703727.pdfIn PDF document text
    • https://temizugejifo.weebly.com/uploads/1/3/1/3/131384470/luwikulupisekok.pdfIn PDF document text
    • https://vafoguvisijun.weebly.com/uploads/1/3/4/8/134887412/f6e461cbd401094.pdfIn PDF document text
    • http://paktum.pro/dms_guide_5ehhw0y.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/iilohgb/74515122143.pdfIn PDF document text
    • http://paganel.world/1549664479461vnb.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/gggijam/luzumatafufaxofa.pdfIn PDF document text
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/1245566.pdfIn PDF document text
    • http://whitetwo.space/xipikopagofuwufewojvtwjl.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/muzzle_flash_effect_free20a6z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459057/normal_5fdfd312ee3c6.pdfIn PDF document text
    • http://myyshooop224.site/8578462783btv6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zenujasope.epizy.com/aov_hero_build_guide.pdfIn PDF document text
    • http://fulawumobolofog.epizy.com/gemujajowixu.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_off0000e09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09E 5516 bytes
SHA-256: 9956947a57d800915f475a17a4aeba5ac1051af4bde301d3db5d4b208895414a
font_01_sfnt_off0000f349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF349 11036 bytes
SHA-256: 03b6fde8d9990cc71666e0408270e0d83d8c695c68a681ebaed0b5a849780e85