Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36ca2bf534388d9…

MALICIOUS

PDF

104.6 KB Created: 2021-03-08 05:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9e1296945ad7ac2216390f8a88feffbe SHA-1: 688e40b41e5536a6c8d40ff8c9b6cfd121564a04 SHA-256: e36ca2bf534388d961d75178c69cd28c724db829f042e63a7d5643d18fae5467
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs 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 external URIs and the overall heuristics point towards a phishing lure disguised as a game guide to redirect users to malicious sites.

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://baarspo.ru/wix?keyword=osrs+monkey+madness+2+guide PDF link annotation
    • http://sokegex.mywebcommunity.org/how_much_do_personal_trainers_make_in_canada.pdfIn PDF document text
    • http://erogan-oficial.site/lg_fridge_service_centre_in_coimbatoreomkda.pdfIn PDF document text
    • http://8bitbeardsco.com/dapowcottv.pdfIn PDF document text
    • http://scandisvet.ru/229680105856jvwf.pdfIn PDF document text
    • http://yildirimotobursa.com/78931761142itj21.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/33785777999.pdfIn PDF document text
    • http://henrysavbr.site/osha_forklift_training_online_freeofi3b.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/suxukola.pdfIn PDF document text
    • http://umniashka.ru/effective_academic_writing_1_freexdj59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bototiluwoge.atwebpages.com/68770423276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d985b787-2b62-4957-bfe3-a6cc7d5585bc/stephen_king_the_stand_miniseries_2020.pdfIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_7982920a0754444a83e9a252d9a690f5.pdf?index=trueIn PDF document text
    • http://wekidezeze.epizy.com/afterlight_apk_mod_full.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_da1760d3bf5248df9afa102dad7f5cce.pdf?index=trueIn PDF document text
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_5a34bb3ea47e43758800113d887e1507.pdf?index=trueIn PDF document text
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_d2c9f00889e14e6d8d5d0ebb8f747cf6.pdf?index=trueIn PDF document text
    • http://buximonerivib.epizy.com/traumatismo_abdominal_pediatria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1095310c-da71-4fc6-951c-62e1005fd985/tenikunefitudumenugavu.pdfIn PDF document text
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_ca4834cf7d1b4b4bb3db20d2679f0a94.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/11548295-3c88-4e3c-a3e6-fbb5a263d00a/zodejap.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_off00015de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DE7 5436 bytes
SHA-256: 04af682ab00a9bf07a11f1074497585709f1b8728e9eaa368740c857774803d2
font_01_sfnt_off00017054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17054 10668 bytes
SHA-256: 5f7afc76b0cb3283849e09b9a64f80d88cda3af748a49791118c066c95803d17

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