Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ff1cc9e4fcd6c3…

MALICIOUS

PDF

86.2 KB Created: 2020-11-13 11:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2abb204af448ba81c3584f0a248bfd33 SHA-1: e3204ab13271a24f16bd9a505070d4a7f93c5027 SHA-256: a2ff1cc9e4fcd6c3f96f1bcfb8d7c4df553564a7e13d409b644b4ff2ae19ea1f
244 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.
  • 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://gettraff.ru/123?utm_term=metodologia+de+la+investigacion+sampieri+resumen In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416654/normal_5f9bfff46053d.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/rewixepulilotefopal.pdfIn PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/49bf71dd5ad481.pdfIn PDF document text
    • https://bizevino.weebly.com/uploads/1/3/4/3/134320064/geweba.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/vagik-rivinovogepix.pdfIn PDF document text
    • https://xakunikuf.weebly.com/uploads/1/3/4/4/134478205/wiwokejepibapak.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/fokapikow/35301178110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e724caec-55b2-4ea1-afa9-65e9da4b4edc/100_secretos_de_pomada_de_la_campana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7459d872-d939-4c4e-ba1c-a8c7bbadefef/41980785538.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/pimizazowut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d23ad4f0-d5f9-46f3-915c-7d4abc63b71c/ginepovoledabixus.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/exercicios_cations_e_anions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11aff50-9f88-453c-b32d-aefc48836ccd/rockler_t_track_screw_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a72f1b8-a66f-4dc2-a1df-d34190d85583/857-216-6661__-6020.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_off00011187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11187 5460 bytes
SHA-256: 7d137db1993069e185d2066f921cdd5e98b11adedb900d30501a0cdfc16302e1
font_01_sfnt_off0001241b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241B 11680 bytes
SHA-256: ccf7abc4afbb41b7b6dbc795198001ade8b24327cbe070677bafe03e03836728

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