Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf1dd184f5a2d85…

MALICIOUS

PDF

73.0 KB Created: 2021-02-10 03:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3311c80dbf2d94cd9db6a1e267255243 SHA-1: 7189ce74cef86d5b4b3dd054053f0183a3db229d SHA-256: 5bf1dd184f5a2d85959b3ae440f23352c1ae08e6a0e81fdd75aea23887e0a8d7
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://baarspo.ru/wb?keyword=netbeans%20php%20tutorial%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501501/normal_6015633da6321.pdfIn PDF document text
    • http://greatmasters.biz/popuwixiosvme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452157/normal_5fd1bc8c9b0b8.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/fohj9nI/sobujowemetogevajerevonut.pdfIn PDF document text
    • http://tokio-2020.fun/car_racing_simulator_2015_cheat8ci95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459325/normal_6006934b1da49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449605/normal_5fe97a39ed205.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/85348681432.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378170/normal_5fc89c4a12f0c.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/TigjiaL/crowd_medieval_city_generator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_5fdbeb191554f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_60168bf2b6926.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/w6Tarih/186950585.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fonenutekosut.epizy.com/purarepanosetisuzepepa.pdfIn PDF document text
    • http://nonozud.rf.gd/angular_template_driven_email_validation.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_off0000e119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE119 5236 bytes
SHA-256: 0a43bab93a2e19f465aabfcc1eec12d683ca8071f929dde168e2d67f06e2439b
font_01_sfnt_off0000f2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DE 10680 bytes
SHA-256: 327a9caa9065fb819354fad6cc503ce7fe2d04bc8c83ef4c64a7464f0bedacbd