Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a3885b39b56418…

MALICIOUS

PDF

78.6 KB Created: 2021-03-02 05:08:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b46e7d796dfda09cb0888a025be8604d SHA-1: c2c6175c235aa672674b1df6cd22ac6413f87ed1 SHA-256: 68a3885b39b56418858381e58c62396e4e3bf395058adecee0014130592bbfd4
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://crophysi.ru/123?utm_term=are+heritage+guns+any+good In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5ff2546a90e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443598/normal_6039248eb9b35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_601ac627539a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443598/normal_601cf8e2a0b71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371498/normal_5ff493f8bef92.pdfIn PDF document text
    • http://lagimuzovixur.iblogger.org/zumebovuluko.pdfIn PDF document text
    • http://lukokiwo.iblogger.org/84793154478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_6036812e89657.pdfIn PDF document text
    • http://rowomonug.mywebcommunity.org/nespresso_vertuo_next_user_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468531/normal_601ad220526cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452863/normal_602ee1620bedb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/best_power_ranger_quotes.pdfIn PDF document text
    • http://watafewajur.rf.gd/8340112711.pdfIn PDF document text
    • http://jomilibilafij.epizy.com/is_philips_lifeline_covered_by_medicare.pdfIn PDF document text
    • http://judiserod.onlinewebshop.net/ejercicios_resueltos_de_matematica_financiera_anualidades.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_off0000f6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 5144 bytes
SHA-256: 7baf7fccb5c1f94f354cf5295d3791e617dbed5bd19ccd7fc80ae446fe2fe9eb
font_01_sfnt_off0001083a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083A 11060 bytes
SHA-256: f23af870f2905eab50501e096a242d169c431a5efa11990e6b33436ebecc29e9