Malicious PDF — malware analysis report

Static analysis result for SHA-256 4824ff45d931252f…

MALICIOUS

PDF

64.8 KB Created: 2021-01-04 18:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 003a0ab87612a2bb374a6bdb15859dd8 SHA-1: d2b023a93d68221ecea313c9156a6d8111fa82a9 SHA-256: 4824ff45d931252f4c687ae7af102ab89bd5599d974234517734953916e19c82
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=shankara+movie++sunny+deol'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=shankara+movie++sunny+deol In PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5ff0f6ab53d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5f8e7927647c0.pdfIn PDF document text
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/pefizovojibezak_jesabowora_sepimog_gamolisexaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/TaTy2Iy/funny_guy_names_that_start_with_jo.pdfIn PDF document text
    • https://cdn.sqhk.co/donewipimep/ihnetgi/woodcutting_3d_simulator_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_5fee80b3595cb.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovusig/igji6hb/62533327854.pdfIn PDF document text
    • https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/9469934.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/calendario_ascenso_mx_clausura_2019.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_off0000b448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB448 5396 bytes
SHA-256: a8c352fa0d87b35dcbaf84a23dd307ad8e01af2588f8fe03b7cbf2022d2c3169
font_01_sfnt_off0000c681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC681 10268 bytes
SHA-256: eba90da5a22cf8062b45e6f01c27e129bf787bb24a9170a2a2e9b0ad40b1967b
font_02_sfnt_off0000e9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 2744 bytes
SHA-256: 51529514090081aeb49d097338ef2fc6b536a5c63f5b3ff6d514623d985dfb1e

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