Malicious PDF — malware analysis report

Static analysis result for SHA-256 d38774e7ce1b0c56…

MALICIOUS

PDF

70.8 KB Created: 2020-11-29 02:49:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: fa4636775ee7d0e043e867ac0641ad6b SHA-1: 514b68d93012f68ced1a1fb9106c9f130c10144f SHA-256: d38774e7ce1b0c5620f8c2696392e88449d6e66fd5a16ba004c435be4b4bab04
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://traffine.ru/square?utm_term=arcane+trickster+5e+spells In PDF document text
    • https://bepugodaz.weebly.com/uploads/1/3/4/2/134236138/pigavojuvut.pdfIn PDF document text
    • https://sedifuwenute.weebly.com/uploads/1/3/4/4/134464273/e308cba0bc3.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/fewit-latafele.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/tizobajevi-dopebulixoni-javomumarilit-roruripofexede.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/fuxusazitasorib.pdfIn PDF document text
    • https://zerexima.weebly.com/uploads/1/3/4/6/134643072/seluv.pdfIn PDF document text
    • https://zipiluzus.weebly.com/uploads/1/3/4/2/134234939/jigitonuwe_vezejogeke_jevakifovopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5fa661e203583.pdfIn PDF document text
    • https://zejikato.weebly.com/uploads/1/3/3/9/133997407/tikajabemunok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393521/normal_5fba4f5979123.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/8395351.pdfIn PDF document text
    • https://jigulukeduza.weebly.com/uploads/1/3/4/5/134508725/tizufejufat_rafaze_kemot_fuloz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f995a402b56c.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/goviwigax/manualidades_para_navidad_en_fieltro.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/lion_king_full_movie_in_english_hd_subtitles.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_off0000d929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD929 5104 bytes
SHA-256: 76aa51e37c69871095ba6e8924d0d2538c460e1738867d59078a3016ee911c1c
font_01_sfnt_off0000ea9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9C 10512 bytes
SHA-256: 443555d5c7bb53d34605b0b4a3ba07f1c56e922d51dbc524adb84071fc6d72e7

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