Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57380f72b650087…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 03:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3bc6ca35913ed71e649816b5718176 SHA-1: 76567a2d5ebb1b9306595df7e963bffd5569a01a SHA-256: d57380f72b650087139f76976734c0f84150116e06c15671ecf646a45da3bbce
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. It also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.com/pify?keyword=bollard+pull+test+procedure+pdf, which is likely used to redirect the user to a secondary malicious site for further payload delivery. No scripts were extracted, but the PDF structure and link analysis strongly suggest a malicious intent.

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.com/pify?keyword=bollard+pull+test+procedure+pdf
    • http://files.becorefit.com/uploads/1/3/0/9/130969936/gegexagibemebu-vijip-zorenisef-wulixiwoxup.pdf
    • http://files.blainesworld.net/uploads/1/3/0/8/130873718/fuluzaxuzedisu.pdf
    • http://files.8720coop.com/uploads/1/3/0/8/130874104/6654053.pdf
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/core_java_quiz_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/identities_equations_and_inequalities.pdf
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/linfoma_burkitt.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/tigowadigego.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/offensive_minecraft_skins.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/introduction_to_fourier_optics_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/exploring_psychology_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/wowebusivugifowapipu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/1017138876.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/41757473166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.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_off000061f8.bin
f3e77fb53d844527893872b8e0b9bf7f267faa50774a0729a002bb878d7f1702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 5200 bytes
font_01_sfnt_off000073b8.bin
74ee8898a6e480ad5e92c5162b67d453e56ce10bcd5a865707db28aeff593fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B8 10404 bytes

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