Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1361e5f58b6275…

MALICIOUS

PDF

63.4 KB Created: 2020-08-08 11:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05aba63274b48b41bdaab407c381bb5a SHA-1: e4c55ebafaa809107087ca868639e07d1b64313e SHA-256: aa1361e5f58b62754014907dea6d9d7bd57ceeb2fd598891707a00bfd402877b
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=pathophysiology+of+anorexia+nervosa+pdf, which likely serves as a lure to a more harmful destination. The document body, though heavily obfuscated, contains references to PDF titles and URLs, reinforcing the delivery mechanism. The presence of multiple Shopify-hosted PDF links suggests an attempt to blend malicious content with seemingly benign resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=pathophysiology+of+anorexia+nervosa+pdf
    • http://files.marciabinderibrahim.com/uploads/1/3/0/7/130740429/6978345.pdf
    • http://files.storylabgeographic.com/uploads/1/3/1/3/131384567/799c729cd44a3b.pdf
    • http://files.truesourceofhealing.co/uploads/1/3/1/3/131379057/1c0dddb5658.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/filarekefukiparesofovopax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1856/7335/files/69431841766.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/musunep.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/vcf_file_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/59950376644.pdf
    • https://cdn.shopify.com/s/files/1/0436/6044/3813/files/mathematics_for_economists_by_taro_yamane.pdf
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/12110849827.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/97487927142.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/kizimevamelakaseginosax.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_off0000aba3.bin
cc3a0c1eac10c5097ab121c6ff74ed8b9cea7759ffada9049a4f2334d7ed265e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA3 5324 bytes
font_01_sfnt_off0000bdbd.bin
d3693ec27ad733a8989b2d12aa756acdcfc268c70caba3df674ee7cd45870c4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDBD 10272 bytes
font_02_sfnt_off0000e0cf.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CF 4324 bytes

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