Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e3ef9873fbe71a…

MALICIOUS

PDF

72.2 KB Created: 2021-02-25 06:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eb3f3c9eec410476879678359f575627 SHA-1: a98edea3c1b2675ef0cc407b7f36ef5e1079f719 SHA-256: 74e3ef9873fbe71a2deb5c1bac3f5aaaa4ccf8be203c752548cedf499c785ef7
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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/award?keyword=libro+el+millonario+instantaneo+de+mark+fisher In PDF document text
    • http://trokot-shopnew.online/fastway_cross_3d_games840f.pdfIn PDF document text
    • http://poruzur.iblogger.org/qradar_dsm_guide_7._3.pdfIn PDF document text
    • http://jaligovaw.iblogger.org/lakuxo.pdfIn PDF document text
    • https://xubetiduradana.weebly.com/uploads/1/3/0/7/130739761/2644ae93a6c.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/ahdij6g/75020944657.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/TTo10gf/82579372748.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/CheHhbs/easy_whiteboard_drawings_step_by_step.pdfIn PDF document text
    • https://cdn.sqhk.co/jidevumedure/egcCgtn/twisted_metal_ps5_leak.pdfIn PDF document text
    • http://zekabivalejasaj.22web.org/cisco_ise_base_license_ordering_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/idHiiif/14385798264.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/tggOsif/8592126436.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/7e634.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nomekerileme.epizy.com/bst_dongle_latest_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/resibividibob.pdfIn PDF document text
    • http://pazatirademe.rf.gd/whatsapp_status_anonym_ansehen_2019_android.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_off0000d8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F4 5292 bytes
SHA-256: 391a34aea4e0575579c94b3bb289685875ee5370f13346194912a87823c43fec
font_01_sfnt_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 11956 bytes
SHA-256: 8b0d8b747287be66b31662343f7e2ecce7a68a69027c9e2519372f1d10918f49

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