Malicious PDF — malware analysis report

Static analysis result for SHA-256 d37d12eec80a9f8c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 02:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5594a77cdaf0a7ec6ef15fb73adb305f SHA-1: 6a68262500424cf2a3bc6b2cd5bf15c8221adbe7 SHA-256: d37d12eec80a9f8ca1101918fe8089800b3b52b90862ce4b23fc0bd3136e33aa
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'free html template for ecommerce website' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=free+html+template+for+ecommerce+website
    • http://juvos.amsp.net/uploads/1/3/1/1/131164538/5cf5d5dd.pdf
    • http://juvos.amsp.net/uploads/1/3/1/1/131164538/
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/42865377438.pdf
    • https://cdn.shopify.com/s/files/1/0436/5628/2265/files/isolation_of_aspergillus_niger.pdf
    • https://cdn.shopify.com/s/files/1/0438/4810/6134/files/ielts_reading_files_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/numosifisurizomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/80162813615.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/xalofupefubovuwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/49548357687.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/lulukuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/98331472012.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/sokavilarimikoralun.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_off0000638f.bin
9b539fc73ad0651c0007b8dc7417f8865989ddf7e821145b121178ec5d1e90c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638F 5440 bytes
font_01_sfnt_off000075f8.bin
9fbb7fc94fd6bf17cc975f286e41b354ec0b6f11e43edf89346508a3f73b1245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F8 10244 bytes

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