Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00646b0da3d392e…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 00:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7875534a36f087bd53e5fe34d2225de1 SHA-1: 74c387573a07f7e3b587fadda9ed4faaa28d8391 SHA-256: b00646b0da3d392ec9d16603d746550064b3b6cf926bf35d3797725c5d2ed8da
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it contains links to known malicious redirector infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass of external PDF links, suggesting a link farm designed to distribute malicious content or phish users. The primary malicious URL identified is https://ttraff.ru/pify?keyword=headway+beginner+cd. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=headway+beginner+cd
    • http://jirak.pensionplanningsolutions.com/uploads/1/3/1/4/131409508/8e77eb348.pdf
    • http://teromufu.wlcsj.com/uploads/1/3/0/8/130814328/7816440.pdf
    • http://files.wfut.org/uploads/1/3/1/6/131606331/nuximolefaxune.pdf
    • http://rotiwo.giltnercustomer.com/uploads/1/3/0/8/130874575/998272.pdf
    • http://sabetudu.mizunagardens.com/uploads/1/3/0/8/130814070/6651835.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/jumugobanokuxiveloparen.pdf
    • https://cdn.shopify.com/s/files/1/0427/9602/3975/files/junurapigokegogopopozavej.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/juzegawoxuxazulolesim.pdf
    • https://cdn.shopify.com/s/files/1/0438/3473/6797/files/82986589027.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/34333858923.pdf
    • https://cdn.shopify.com/s/files/1/0451/2183/1065/files/40773497617.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/raxinopenefegedisomo.pdf
    • https://cdn.shopify.com/s/files/1/0450/3791/2214/files/lab_safety_signs.pdf
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/quantitative_aptitude_solving_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/73913519534.pdf
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/deniniji.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/air_brake_system_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/chhath_video_songs_2017.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006251.bin
8faab0a8a6a42a343dec7bb3bacf12bf4dfabe32c9dd0326342eccc72774bb5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6251 5192 bytes
font_01_sfnt_off00007417.bin
f31c5a834d7fd633b709a6d9b9ac64fca9d656b888a00c72bd24a21beee40308
pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 12284 bytes