Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af3258fd2274fc1…

MALICIOUS

PDF

74.2 KB Created: 2020-12-28 02:10:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: cdafd66f41b4d7aedf556180ab7eaee5 SHA-1: 7abf0baf9eaedf35f663df13c8f1a246cc7a05c0 SHA-256: 1af3258fd2274fc1334fa7f96741b9b7c75ca8e5b9cc9e4fb6ebff9b37021682
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL is disguised as a game hack download, suggesting a phishing or social engineering lure. The ML classifier and ClamAV detection further confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=world+war+1945+hack+apk In PDF document text
    • https://cdn.sqhk.co/xidosisew/jfIhGgd/didopofokefodirikoduraduv.pdfIn PDF document text
    • https://cdn.sqhk.co/faxiwapa/SqTmwhr/naxix.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/ohcgjLh/traffic_run_download_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/varolexexus/39016438360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe795486-2947-4059-87f7-72631b50b232/mupadiwipanafare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf0f199b-38f6-404e-b1f0-b31e6d92e874/anchorman_full_movie_123movies.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/86171771748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/765952c9-7e66-4650-b1ac-8cd64a258c13/vusexedaluxofoj.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/alkene_and_alkyne_nomenclature_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1abfd58-3fb8-4d98-8e4b-f535885d4469/papa_s_hot_doggeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ba1201-3ebe-42ba-9be1-c6f09d9c704c/fatal_bullet_chip_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a420855-58df-4ebf-b39e-69696a2765a0/moral_letters_to_lucilius.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/zowipojekidovo.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/le_brassage_gntique_et_la_diversit_des_gnomes.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/boundaries_worksheets_for_adults.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_off0000e67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 5572 bytes
SHA-256: 1782fef680eab7d63c674ec7a2df34999575e3f66d68e9025f03f6f477f49b55
font_01_sfnt_off0000f993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF993 10000 bytes
SHA-256: 90363004f544f1218dc83c217677db9824b3b2cafd6aa4d67154ce31b8c53148

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