Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af6f48be69dda4f…

MALICIOUS

PDF

61.5 KB Created: 2020-11-21 23:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ba26e45cbd5f78b50f3adef39ecfc488 SHA-1: 76fd4c72107cd606dc7d226465718271433fcf07 SHA-256: 3af6f48be69dda4f0e3e1aa57f78652eea21cce214f82516bb907c260498a1ce
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. ML classification also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a second-stage payload.

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/aws?utm_term=bhakti+gana+dj+mein++mp4 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_5f9fe31ba4eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501201/normal_5faf0621a535c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456663/normal_5faae3d381b98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5faf0b6b108e3.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/0f4ad7f9-6eae-420f-abae-46424c69cbb7/ffxiv_goldsmith_leves_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53ce79bb-49c1-475f-9a85-67823a1ab61d/32374686886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f7b3e2-2271-432d-a7e8-2b3647ffcd80/5000580361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a759f6-5109-4587-9e15-cc17e39976a6/kadapese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5b5291d-8f69-4547-8855-d9cf30909ea5/lulatimexabafibonew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b478fe83-3e19-4594-972f-02363e39406f/1150905592.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/32309965918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38175bc7-2662-4693-bd92-6d9b8aa28dd1/52918507688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bab5cd87-e427-4f94-8c6d-55d58e043b7b/reddit_game_of_thrones_torrent.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/17934737788.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_off0000afd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD2 5344 bytes
SHA-256: 019a632b81f8f41253a7227d9403a68755e59c4f794a336bc6bf71cfcd7519e9
font_01_sfnt_off0000c1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1ED 11996 bytes
SHA-256: a0ccabaf7e4511cb02aa4a9c2e475ff977c107578ff74223a3a516bcc59b8981

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