Malicious PDF — malware analysis report

Static analysis result for SHA-256 33858e7599e649b8…

MALICIOUS

PDF

67.5 KB Created: 2021-03-01 05:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e40e74dea9d083b740d6f7632e2d51ca SHA-1: 06e13035493d579cf4c5f063db28e7325b1f4eb0 SHA-256: 33858e7599e649b8ee37d0eb265faa133da269f3eca195034c36dbd0319e7dce
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/award?keyword=when+two+worlds+collide+lyrics+john+prine PDF link annotation
    • http://rm-swis-mine.com/10203436051vxasc.pdfIn PDF document text
    • https://rupanusevufow.weebly.com/uploads/1/3/1/3/131380126/devisir-nulet.pdfIn PDF document text
    • https://bemezonef.weebly.com/uploads/1/3/5/3/135389856/dujokiwes-mufukuzuzorinol-zotapawage.pdfIn PDF document text
    • http://okstore.info/hack_game_dragon_x_dragonbgfx9.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/khdifjc/jabujawax.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/ahfidgi/lethargy_synonyms_crossword_clue.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/lafefesutegujunepul8nybs.pdfIn PDF document text
    • http://amin-ukraine.net/simple_compound_and_complex_sentence_practice_worksheetsvxaug.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/izhhifd/takeout_restaurants_around_us.pdfIn PDF document text
    • http://sysfix.ru/boney_m_christmas_carols_songs_list00skh.pdfIn PDF document text
    • http://axacheat4.xyz/tony_james_out_of_the_box6avem.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/RHi1vii/harvard_business_review_subscription_student_price.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/womirofop/sustainability_report_asian_paints.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/68569499821.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_off0000ce7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7A 5236 bytes
SHA-256: dcef2594bcc66dd6ff9dbd27d6a5dc9f78b87f3c37fa7b04e4879c349c11c59f
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 9532 bytes
SHA-256: 49b742882deef1eb28ea2a1816e96078da5b9324b7de6da0f6d82e5c3cf1caf3