Malicious PDF — malware analysis report

Static analysis result for SHA-256 824a71d6bc56131b…

MALICIOUS

PDF

68.3 KB Created: 2021-02-13 00:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f42fcb467a72e4961f675bae26124c73 SHA-1: 41b1dfb895eaab2450b4fa962f181588eb6dbfa5 SHA-256: 824a71d6bc56131bea6dc0dfb9829848e2e7a92f466a3a2270306b70f39cf286
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=wipeout+hd+trophy+guide PDF link annotation
    • https://cdn.sqhk.co/laxefotogulo/iahhahh/anti_theft_alarm_system_for_home.pdfIn PDF document text
    • https://cdn.sqhk.co/bufomofa/hijghdY/89485701750.pdfIn PDF document text
    • https://nowiwadigomu.weebly.com/uploads/1/3/4/0/134018048/80263.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/if8geYL/basketball_goal_walmart_toddler.pdfIn PDF document text
    • https://tezolusubugejel.weebly.com/uploads/1/3/5/3/135314563/7824007.pdfIn PDF document text
    • https://cdn.sqhk.co/xusopusavo/hajagc4/brand_management_job_responsibilities.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/Dzijjhe/tennis_racket_3d_model_free_download.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/d5fa08f98e1.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/lorifumofelu/11th_biology_book_volume_1.pdfIn PDF document text
    • http://fekerudosepu.rf.gd/ambiguity_in_english_sentences.pdfIn PDF document text
    • http://nogomazarem.epizy.com/tamasha_full_movie_hd_quality.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/bamoluburelidomasos.pdfIn PDF document text
    • http://bosurigazo.epizy.com/rexovuvozakigenogabeg.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_off0000cfa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA2 4916 bytes
SHA-256: 1a478f99c08d97962d7aef81625caa018276a1b8d6f082bff502989342b9f0f8
font_01_sfnt_off0000e06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06D 10576 bytes
SHA-256: c784d11e370974a19314103c526a07bcf4122e797d14b652631351f980ace8f0