Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e75ced1a1ab80a2…

MALICIOUS

PDF

71.2 KB Created: 2021-02-25 13:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 804686e490f5a34a15a3ec889eb4bb08 SHA-1: 529f9cd4c65d04628658b304f929ac25e4ee8a0c SHA-256: 8e75ced1a1ab80a28e1665941f1c97f4fd7e322b2d05eb581f9328327ce6ac5a
186 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
  • 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.
  • 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://jacksth.ru/award?keyword=ap+style+book+reference PDF link annotation
    • https://cdn.sqhk.co/nugopanage/r1ge9gh/85726015646.pdfIn PDF document text
    • https://tijirurilulade.weebly.com/uploads/1/3/4/3/134312421/xekoxe.pdfIn PDF document text
    • https://wegakerovosa.weebly.com/uploads/1/3/0/8/130873826/2188754.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/how_to_reset_sentry_safe_factory_code.pdfIn PDF document text
    • https://siwelizotelet.weebly.com/uploads/1/3/1/4/131437983/ff74e17d3.pdfIn PDF document text
    • https://cdn.sqhk.co/wituruxa/hgjQ73B/limebuvimatiwolubomusob.pdfIn PDF document text
    • https://tedofejufada.weebly.com/uploads/1/3/0/7/130775935/124720.pdfIn PDF document text
    • https://bexobejunoguwed.weebly.com/uploads/1/3/0/7/130775871/xusemovuri.pdfIn PDF document text
    • https://fejilezujew.weebly.com/uploads/1/3/4/3/134340931/6490572.pdfIn PDF document text
    • http://supijijuzumapiz.iblogger.org/best_definition_of_a_strict_constructionist.pdfIn PDF document text
    • https://cdn.sqhk.co/bavimimo/giaGjdY/download_game_offroad_trials_simulator_mod.pdfIn PDF document text
    • https://davabodijesofid.weebly.com/uploads/1/3/4/4/134474123/5647067.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutejaxevewef.myartsonline.com/navy_advancement_exam_dates_2021.pdfIn PDF document text
    • http://bumurulepowele.myartsonline.com/brooklyn_colm_toibin.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/93168637739.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/holley_hp_efi_tuning.pdfIn PDF document text
    • http://danobefaxejo.rf.gd/zenezezevotixixewagosaso.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_off0000dcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB4 5092 bytes
SHA-256: 903431a220e10038da18ae47dafde20bbe57cdab8578871829e622368a733dff
font_01_sfnt_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 10000 bytes
SHA-256: 9118e7c4c95980a35aa0060091634dc9701f7b79b8e76450641c100409c9d9a4