Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67d0f2ab25671c1…

MALICIOUS

PDF

73.8 KB Created: 2020-08-14 16:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6107f19ed432313d64434801637f52cf SHA-1: 7d517a3fe07f3b7ece24959eb450542012d732fe SHA-256: d67d0f2ab25671c16542927318d1bec36ba7ebb01c7102362ef2f92198b32ef2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to host malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=transformers+fanfiction+prowl+protective', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the intended lure. The presence of numerous other links, predominantly hosted on cdn.shopify.com, further supports the link farm characteristic.

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=transformers+fanfiction+prowl+protective
    • http://files.piperscafe.biz/uploads/1/3/0/7/130775242/ebd8b0c.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/xususatimefidimefaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/windows_10_disable_automatic_restart.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/49768186031.pdf
    • https://cdn.shopify.com/s/files/1/0440/6195/0117/files/bajirilotisaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5280/files/61051664741.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/the_curious_researcher.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/vogerilivezajefozeza.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/zudinemenoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/72785657978.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/mazokebufosafejozexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/bobuwegug.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_off0000e5d5.bin
93ee1c1494d5aa23f30e7aab777ac956c9bca11a29dee088e7a3f4966aa93852		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 5264 bytes
font_01_sfnt_off0000f7bb.bin
02905b9bcc6d8b6d796fd6d19bd35d8fec0b9e8fc35b28dd733767644584e7e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 10024 bytes

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