Malicious PDF — malware analysis report

Static analysis result for SHA-256 46937aaac6a63d73…

MALICIOUS

PDF

78.3 KB Created: 2021-03-20 18:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a13ce37345b0df33f579b4cfd5520830 SHA-1: c94c760a79f47ada0908909bbd5960c207bd79c1 SHA-256: 46937aaac6a63d73d8fef00e28674a14e17bfd7cebdbfbf5730b7ee7e6b6f886
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, and contains numerous external URIs pointing to disposable hosting. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The embedded URLs likely lead to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://lozipotod.ru/strik?utm_term=collusive+and+non+collusive+oligopoly+class+12 PDF link annotation
    • https://dexekuweda.weebly.com/uploads/1/3/4/7/134705305/9625037.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/poser.pdfIn PDF document text
    • https://cdn.sqhk.co/kuderoxuz/e6bgix1/underground_crew_2_drag_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/icJcVgA/26820292085.pdfIn PDF document text
    • https://zimuvudiredefux.weebly.com/uploads/1/3/2/7/132710782/jinufebilezaja.pdfIn PDF document text
    • https://sutopudebesi.weebly.com/uploads/1/3/1/4/131438093/2437178.pdfIn PDF document text
    • https://kesizibewasi.weebly.com/uploads/1/3/0/8/130813921/juxas.pdfIn PDF document text
    • http://bogipeborowe.sportsontheweb.net/73609158495.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/how_to_answer_a_complaint_in_the_special_civil_part_nj.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/5601886.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/sajatesawodiji/incident_reporting_procedure_osha.pdfIn PDF document text
    • http://jokodakive.onlinewebshop.net/puxegosit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d69c61e-1600-44c6-9aec-2811be9eba9e/lorozasiniravowafixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b69607f-6ebb-450c-aecb-323b373fafb5/the_darkest_minds_2_full_movie_release_date.pdfIn PDF document text
    • http://wazeniwemir.onlinewebshop.net/90594604998.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/borderlands_3_trophy_guide_and_road_map.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/software_product_development_manager_job_description.pdfIn PDF document text
    • http://rabelinowizufe.myartsonline.com/sibigov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/131f7e68-8bff-48ba-b389-5819e718c784/nostalgia_ice_cream_maker_how_to_use.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_off0000f36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36F 5396 bytes
SHA-256: 763aea26fe48bfefa7c99fa0bc2a8361be645a14fe196d4eeb2b46ef4e426324
font_01_sfnt_off000105f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F3 11064 bytes
SHA-256: 296cdd1a995cca178ec85780b92a0585f2dd85e1a15e7ce7f82c007ca0ed733a

Open this report in the interactive analyzer, or submit your own file for analysis.