Malicious PDF — malware analysis report

Static analysis result for SHA-256 395c2d409f8d44a2…

MALICIOUS

PDF

61.5 KB Created: 2020-11-18 07:32:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6ae6fcd61d536690146285c34c263d03 SHA-1: b91ce2fa7c9241dc7aa0923ec83fdd442fdebd65 SHA-256: 395c2d409f8d44a24ace15cbd7c6c751da825c98066191f2ab5ef18a2229aac3
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high-confidence ML classifier. The embedded URL 'https://ggtraff.ru/123?utm_term=age+of+charlemagne+asturias+guide' is identified as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to redirect the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ggtraff.ru/123?utm_term=age+of+charlemagne+asturias+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_5faf7a36bd8b9.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/wopari/albeniz_suite_espanola.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/valores_normales_de_glucosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49865585-ffaf-40de-b116-4d7d0c170adc/stardew_valley_money_making_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d81abfbf-5299-495b-8a23-b72df44b80b2/zasixemopogubiwojixav.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/50472918061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/130e8aed-0536-4d8a-84e2-4b2ed8a04485/jadufesiregopitetikedof.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/audi_a3_2017_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/lier_plusieurs_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/74116456162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3636d5a1-7e3e-4a4a-bd4e-e675d204c385/89077229872.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/boson_x_free_android.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_off0000b3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F2 5424 bytes
SHA-256: 9082cabe1b9b93fdd011c954ed9daaecfa5c5be7a84fa32a642e2add0064fc5b
font_01_sfnt_off0000c642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC642 10240 bytes
SHA-256: 8288be8400334dd777bc574da9cd8b48a88f8fe9ac477c43b75f9a76a10fbe9d