Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f188df45274d3e…

MALICIOUS

PDF

60.8 KB Created: 2020-12-19 00:53:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a7b76629a02438c3afef9ff480eaac7f SHA-1: 7bec18307acb063d65e29fce77a0e6537f0adf44 SHA-256: e8f188df45274d3ef8626d4d6556e03d654061634f7399a83225064ba24f254c
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://gettraff.ru/aws?utm_term=chai+tour+guide'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely as part of a phishing or malware delivery campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gettraff.ru/aws?utm_term=chai+tour+guide In PDF document text
    • https://botasapozav.weebly.com/uploads/1/3/1/6/131607984/jegufuneve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501989/normal_5fbac354e15bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410714/normal_5fd929ec08f68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b37c9b6-e39c-4a01-9171-42c729d303b9/ballad_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/espiar_whatsapp_gratis_desde_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51acebe9b693951260026/t/5fcafdd5b495bd20281939e7/1607138779237/cars_3_movie_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9eb3398ff75152e2002/t/5fc392f76457125654aa1ebb/1606652664491/mazewiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96fa95b6-c788-44ee-9a36-6c6bc1c33850/99611611174.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/walmart_online_shopping_website_news.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/krunker_addicting_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/sowenizitagizunu.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/firefighter_incident_report_example.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_off0000b254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB254 4784 bytes
SHA-256: ebe48320efa9d46d8fcfcb71762854637db7a4f3bc6537bc0aee1123b1f13a0b
font_01_sfnt_off0000c289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC289 10712 bytes
SHA-256: 89887f5d589a1008eb3f51b2217d378d2e85b74311f78822a34a844f6b35a571

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