Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3121e36180e088f…

MALICIOUS

PDF

63.0 KB Created: 2021-02-04 22:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f47f0e25fdaecb7ad4987875ee4ee4af SHA-1: 063a08d0cc0680fad2475ccc7c7d57d25cbe56a6 SHA-256: b3121e36180e088f40f6a6ab7479f0d2df277f74c169c122f0370b636ffc20ff
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=afrosai-%20e%20performance%20audit%20handbook PDF link annotation
    • https://ganubidorebe.weebly.com/uploads/1/3/2/7/132740923/vededadazek_ratiz.pdfIn PDF document text
    • https://rukufutuseju.weebly.com/uploads/1/3/4/7/134748195/4841110.pdfIn PDF document text
    • http://detonic-italia.website/7326020434u3ik6.pdfIn PDF document text
    • http://steelsho1.club/handwriting_without_tears_practice_worksheets9ym3g.pdfIn PDF document text
    • https://mapulanedubo.weebly.com/uploads/1/3/0/9/130969056/jatuwik_riwamesuz.pdfIn PDF document text
    • http://lnstagram-helping.live/corrective_exercise_specialistg6wjz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503387/normal_6018372bcac00.pdfIn PDF document text
    • http://eduha.online/35906827795rboma.pdfIn PDF document text
    • http://4d-5d.com/kayn_league_of_legends_guidev94s2.pdfIn PDF document text
    • http://stalekost.site/adamantium_vs_vibranium_videod5lw8.pdfIn PDF document text
    • http://indital.space/digital_cinematography_david_stump_download7618j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_600b9d96e2121.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_6004d96c2c77a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460447/normal_6001021595ad5.pdfIn PDF document text
    • http://show-visitor.xyz/levutuweturekowil07802.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/latufenaw/75397430652.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/apc_back-_ups_xs_1500_lcd_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/ketis.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_off0000ba9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA9E 5588 bytes
SHA-256: 5b374efeecea8486b29c1b6883214fcd100687781cb786f57b143299079090f3
font_01_sfnt_off0000cd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD77 9760 bytes
SHA-256: 8347956ebb4071bad4140c4fa00579bfed5cb674d22ac82303891c260455dbf6