Malicious PDF — malware analysis report

Static analysis result for SHA-256 319c69892fb2a3a1…

MALICIOUS

PDF

73.8 KB Created: 2021-01-19 23:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1b1410fa20aea7bf4a92798c38f4557e SHA-1: 2b3b1f65ddfd7f588766e2fcbf639ff4ca457a7f SHA-256: 319c69892fb2a3a1dd11d2e709ef85e614a033cee7901408d6252fc99514fa69
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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 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/123?utm_term=ps4+usb+hub+best+buy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5fa8a12143c28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462339/normal_5fe39d66065a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453754/normal_5fbd0e79d93f2.pdfIn PDF document text
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/wiberukuxozedive.pdfIn PDF document text
    • https://site-1177634.mozfiles.com/files/1177634/tolokimona.pdfIn PDF document text
    • https://zulufiki.weebly.com/uploads/1/3/4/6/134662959/9307225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5ff5f84a44406.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd17018d29a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fc2dd8edca4a.pdfIn PDF document text
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/ee1241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402032/normal_5f91935d5ea88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369328/normal_5fdd7d1c6d63c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480399/normal_5ff7d420a09b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410703/normal_5fb5bc9a27e8e.pdfIn PDF document text
    • https://site-1207400.mozfiles.com/files/1207400/nba_2k20_locker_codes_my_career.pdfIn PDF document text
    • https://site-1171473.mozfiles.com/files/1171473/32568315908.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ferefifadiziv.rf.gd/22515370010.pdfIn PDF document text
    • http://muvelexadaw.epizy.com/jimokilibotipubagatu.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_off0000e57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57C 4764 bytes
SHA-256: 3a089c787009a6dd1540f79044392489fb46f921579a55dc65b704a4d3c2f19c
font_01_sfnt_off0000f5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C4 10784 bytes
SHA-256: 67f5bca661369e9490d40c8b3bfc0739ed0639eee20be0328b0ac6c74067680c