Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad240bfe428be6b…

MALICIOUS

PDF

79.1 KB Created: 2021-02-10 00:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5b66180060a358ac3658eac1b546f8e3 SHA-1: f4d7d4d087dac01bd006b23bf29aebf2a2dfbb74 SHA-256: 2ad240bfe428be6be4df67fe930458ff610fdac1abae69671b8bf22e2f452a78
126 Risk Score

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://jacksth.ru/aws?utm_term=mechanical+aptitude+test+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/bitomasijelo/ligUsjf/dining_table_set_for_6_round.pdfIn PDF document text
    • http://xepekil.iblogger.org/zifogaxovijezutiro.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/Qghhgqj/piano_tiles_2_humoresque_no._7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467032/normal_5fe0c1c6d064b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5fd93e439c863.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_6014d9ea4a696.pdfIn PDF document text
    • http://mofizikozi.22web.org/bijiziradodaxevexijid.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/zupenafud/33289241205.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/weather_report_for_long_island_tomorrow.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/the_dead_don_t_die_song.pdfIn PDF document text
    • http://butevagowug.epizy.com/gagusaloridikepesura.pdfIn PDF document text
    • http://zufelagek.rf.gd/pizuzej.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/lfce_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/4893597058.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/8745133679.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_off0000f827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF827 5384 bytes
SHA-256: 0045fcb90649cde2a56e3503fbd9c6de9f51ec00b8ca017cc37aa45ee9cbc519
font_01_sfnt_off00010a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8A 10784 bytes
SHA-256: cdc0ae43ca55f1035870326e629a46b2aeb1d38ebd41d2cccf47569d5e916a0a