Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3954ad44617305…

MALICIOUS

PDF

67.6 KB Created: 2020-12-31 22:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e7c6e39b19bf94ea0c1df90f523f180 SHA-1: 4e86a79b8b0ce69048aa43a3238361090eb9c20d SHA-256: bc3954ad446173058824dc90ab24fd819b6e6e7e17cd26452bc34639e3fdaf15
212 Risk Score

Malware Insights

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

This PDF document was flagged by multiple critical heuristics as malicious, including a link to known malicious redirector infrastructure and a link farm. The embedded URLs, such as 'https://ggtraff.ru/strik?utm_term=moto+g7+power+wireless+charging', likely serve as lures to phishing sites or further malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect the user to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=moto+g7+power+wireless+charging
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5fb9122592d6e.pdf
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5f8b917f3841e.pdf
    • https://tovepeluzon.weebly.com/uploads/1/3/4/3/134385389/3002533.pdf
    • https://cdn-cms.f-static.net/uploads/4428341/normal_5fba3c02c8b55.pdf
    • https://siwovipon.weebly.com/uploads/1/3/4/7/134705210/60b7f5448275.pdf
    • https://cdn-cms.f-static.net/uploads/4446027/normal_5f9e930c2daa2.pdf
    • https://static.s123-cdn-static.com/uploads/4486192/normal_5fe31878012e1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4f0e2b85-fd05-4b45-b0c8-3c1f67fdf648/44484570539.pdf
    • https://uploads.strikinglycdn.com/files/31df6e1e-1a72-4024-a185-a9c83ca2a4b7/56749004966.pdf
    • https://s3.amazonaws.com/purufiz/ismart_shankar_movie_songs_telugu.pdf
    • https://uploads.strikinglycdn.com/files/bd5d42d5-09ff-4f6a-b9df-178634eeacd4/davis_vantage_vue_6357_manual.pdf
    • https://uploads.strikinglycdn.com/files/e36ec967-f0a0-41b4-add1-47cc16e65a79/8571168657.pdf
    • https://uploads.strikinglycdn.com/files/a9e50f44-62c0-4d1b-b4e9-27f4d831e39e/joel_osteen_libros_en_espaol.pdf
    • https://uploads.strikinglycdn.com/files/badd8706-a58c-4fbc-a7ba-d253efd642cd/22618827932.pdf
    • https://uploads.strikinglycdn.com/files/699fee23-e2b2-4878-acca-ccfe6edb09b3/26245052754.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e694.bin
690986f1a8fa5cbb781697814aadbf3d0bcb3f7c2fbef4caece2139eac3f8fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 5160 bytes

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