Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c5c3c1670d4491…

MALICIOUS

PDF

44.8 KB Created: 2020-08-28 15:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dd3bdd5bba27b432cfda65eb6438a79 SHA-1: eec28171d71886eddcab1117f93d31c82dba2250 SHA-256: b2c5c3c1670d4491f5f555616770f95a50c42ab591f82c1462b06aa38d600e39
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL `https://ttraff.ru/pify?keyword=applied+numerical+methods+for+engineers+and+scientists+rao+pdf` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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://ttraff.ru/pify?keyword=applied+numerical+methods+for+engineers+and+scientists+rao+pdf
    • http://files.navigatealzheimers.com/uploads/1/3/0/8/130874257/8fe7333dd9d.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/pivil.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/25259893552.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/jawulowesigupiwar.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/jewojepaneseriruraxulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/76043185651.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/bwv_543_piano.pdf
    • https://cdn.shopify.com/s/files/1/0438/6347/4331/files/capitals_of_countries_in_world.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006325.bin
b3c96ecb0deb05fc7f0e79b80c1b0e334006d263125c748589ce6a5df7b62280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 5440 bytes
font_01_sfnt_off00007567.bin
59c3c861ee21f13437a83e4d884364ec27635ebf4e12e99378955b6bfa6f3297		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7567 10024 bytes
font_02_sfnt_off000097ae.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97AE 4324 bytes

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