Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6c46a993b294d5…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 15:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b8eee490014c90e0f6514ce8f29386ed SHA-1: a8fdded23fcb17284e7db21fc67af998bcace353 SHA-256: 0d6c46a993b294d52a60f33c0e027b92d4520eb4922a1f1e52ba7119f3403af5
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of many URLs and the heuristic firings point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=kubla+khan+main+theme PDF link annotation
    • http://amst-watch-v2.club/generative_adversarial_networks_with_pythonk0rir.pdfIn PDF document text
    • https://cdn.sqhk.co/bogofuvizibu/GjfsgcB/3888716285.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/scRgcji/car_driving_fast_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/iaYP0ia/gallery_63_atlanta_georgia.pdfIn PDF document text
    • http://s-tochka.ru/what_do_ethical_hackers_need_to_knowkq0xq.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/0fgeifN/tap_the_baby_frog_faster.pdfIn PDF document text
    • http://everydayy.fun/madubughyei9.pdfIn PDF document text
    • http://naturwow.space/10565935524wk6m5.pdfIn PDF document text
    • http://jujiwaneko.iblogger.org/excel_formulas_not_working_mac.pdfIn PDF document text
    • http://wtia.space/torawulatogijoro9t726.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/black_max_3200_psi_pressure_washer_with_honda_engine_and_triplex_pump.pdfIn PDF document text
    • http://wordsidepost.top/nfpa_1410_drill_12tqs6r.pdfIn PDF document text
    • http://tobufupevujuma.mygamesonline.org/biology_lab_report_format.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/you_are_the_universe_deepak_chopra_summary.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/11384807399tvb1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxiruvud.myartsonline.com/vitamix_5200_blender.pdfIn PDF document text
    • http://roxinus.rf.gd/sorodozavesetapozedumufor.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/unit_6_geometric_proof_answers.pdfIn PDF document text
    • http://wabelat.epizy.com/vodudixowataxebuf.pdfIn PDF document text
    • http://kiwuvapinemugi.rf.gd/zatozekikaturojepe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0A 4824 bytes
SHA-256: d4b49046be3690a47f80a2671636c8ece1a92a450e7fe8dabf4dbf20a595bf70
font_01_sfnt_off0000ea46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA46 1940 bytes
SHA-256: 3c8c70e95e172d87f88249f6e98f5fcd1d779dd22b9512bb6276049fa774e71f
font_02_sfnt_off0000f37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37E 10148 bytes
SHA-256: 8a92aa33c5fff19241ba43608722f8e28b7c7ebd1befebe5b8e07665a4ad8e9b

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