Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc00310f2f00e150…

MALICIOUS

PDF

67.3 KB Created: 2021-02-28 12:16:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1845c7772a26f92605fab9482752515e SHA-1: 51259033294660473f484f47d9b6abdc08dafeb2 SHA-256: fc00310f2f00e1505d4c4f88138d66a6d6745027ce5e45cb40657d40326c6850
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though partially corrupted, contains references to 'Raze unblocked games' and points to external URLs, suggesting a lure to a potentially malicious website. The presence of embedded URLs and the overall structure indicate an attempt to redirect the user to a link farm or a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/wix?keyword=raze+unblocked+games PDF link annotation
    • http://dogalijun.scienceontheweb.net/nivewij.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/nixokagezawirupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405899/normal_6026572c6ec2b.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/gBgjsnv/lomodogalinat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499317/normal_6004dc1942721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482228/normal_5fec50ef3e58a.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/4bqjd67/58646508956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5fde0344c2ead.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425227/normal_60070ba1bdc13.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/do_weight_watchers_scales_need_batteries.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/pjbHibN/kixusugijavabusamumule.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duvodix.myartsonline.com/how_to_use_negative_space_in_interior_design.pdfIn PDF document text
    • http://xenezipulugiji.atwebpages.com/how_much_does_a_hand_sewing_machine_cost.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/14707860419.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/how_to_make_beef_jerky_in_oster_dehydrator.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/ielts_writing_answer_sheet_2020.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/dupapemodibigulewuwokoz.pdfIn PDF document text
    • http://bidusibebawuz.onlinewebshop.net/the_raven_cycle_book_1_read_online.pdfIn PDF document text
    • http://wififeju.atwebpages.com/gopiwowofozowiginaxo.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_off0000cbf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF8 5424 bytes
SHA-256: 964500f485b98ad832d7da6dabe3b367b00ccf6ec346b646c39910a535666c08
font_01_sfnt_off0000de6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6A 9860 bytes
SHA-256: 385bff305ac24eebfa9b0c2b1a7ab2a2d98f2bba2f25498bf455e3d2c13232c2

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