Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba9fab3ffc25caf…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 20:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 10736ff7d5b9c6d8ec6c64d0c0fb5973 SHA-1: 8a79a82c62f7a9b3fd3fb60d5541baa6796d8351 SHA-256: 2ba9fab3ffc25caf46e05b724a2a647643dadf21e8b991f08eda66a57f0c5f7c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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://bologen.ru/wix?keyword=zombotron+2+hacked+unblocked+games PDF link annotation
    • https://kezagoguz.weebly.com/uploads/1/3/4/1/134131769/6261004.pdfIn PDF document text
    • https://gegefexazo.weebly.com/uploads/1/3/0/8/130813269/kiredubelafonu.pdfIn PDF document text
    • http://mamontov-net.cc/how_to_get_agile_certifiedwie1i.pdfIn PDF document text
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/sunamuxuj.pdfIn PDF document text
    • http://freshmind.net/onedrive_365_tutoriale4jd1.pdfIn PDF document text
    • http://picsonair.com/37343428141p5ahy.pdfIn PDF document text
    • http://stepka2016.xyz/65913326764s7vos.pdfIn PDF document text
    • https://miragojed.weebly.com/uploads/1/3/1/6/131637546/gaxovesuwofopo.pdfIn PDF document text
    • https://zazanopub.weebly.com/uploads/1/3/2/7/132712119/pelekup.pdfIn PDF document text
    • https://rapalavosifezo.weebly.com/uploads/1/3/4/8/134886177/3e706fa7c.pdfIn PDF document text
    • http://malapiwo.66ghz.com/bloons_td_5_hacked_android_free.pdfIn PDF document text
    • https://gudabujazoz.weebly.com/uploads/1/3/0/7/130739385/961341.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pasufok.rf.gd/48556411310.pdfIn PDF document text
    • http://buxazub.epizy.com/texas_child_support_direct_deposit_form.pdfIn PDF document text
    • http://wazikaje.rf.gd/pugerufowuraragiwabupabet.pdfIn PDF document text
    • http://vugixemavofagen.epizy.com/apc_1_kva_ups_datasheet.pdfIn PDF document text
    • http://josotemasafu.rf.gd/hardest_harry_potter_quiz_ever_made.pdfIn PDF document text
    • http://denowejifonur.epizy.com/niwajuwanukezopibu.pdfIn PDF document text
    • http://tipunogat.rf.gd/all_of_me_piano_sheet_easy.pdfIn PDF document text
    • http://borakenibafet.rf.gd/mole_calculation_practice_worksheet_answer_key.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_off0000dc1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1B 5648 bytes
SHA-256: addb53276b0e8b43d337c603d8b976a22f8fe42f53ca4873cb5872334993083b
font_01_sfnt_off0000ef1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1B 10372 bytes
SHA-256: ae5fb19e9f3f28ac761c2055d1669871af2e360bb71e92e8100302523b17abe2