Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f40b45fa7efd9cc…

MALICIOUS

PDF

36.7 KB Created: 2020-08-12 13:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a76f57a86bf131c6f527d84634032e1c SHA-1: 10660fbfec4da25831f633d84e661a746f0847ec SHA-256: 3f40b45fa7efd9cc7955cfccd002c6f90e63a4bc8e3658ffdc7ad879f9b2bb81
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.com/wb?keyword=psycho%20cybernetics%202000%20pdf. While the document body contains text related to 'Psycho cybernetics 2000 pdf', the embedded links suggest a broader SEO poisoning or malware distribution campaign rather than a specific document lure.

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.com/wb?keyword=psycho%20cybernetics%202000%20pdf
    • http://files.freedivingcompetition.com/uploads/1/3/1/4/131453036/fugisaxotokisabanak.pdf
    • http://files.darlingyoga.com/uploads/1/3/1/4/131453007/vijutu.pdf
    • http://files.mybutlershop.com/uploads/1/3/1/6/131636862/bokume.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/how_to_get_free_robux_with_inspect.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/duvuwatew.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/71966728558.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/rise_of_nationalism_in_europe_class_10_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/sidegize.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/961900536.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2741/2645/files/absceso_periapical_y_periodontal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3512/3102/files/punidajutemokobejupadujev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/veduvusivuxemabegivuw.pdf
    • https://cdn.shopify.com/s/files/1/0448/1869/4305/files/55582638854.pdf
    • https://cdn.shopify.com/s/files/1/0440/7269/8006/files/e2_80_9chors_piste_e2_80_9d.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_off00004f91.bin
024f715e68675545a73a7dc1a6f7c42bda936809d1fb84e3d4e9149139152b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F91 5516 bytes
font_01_sfnt_off0000624e.bin
4092638860cded3857c9bd50ab6e09d315c03342d6de6360022ce6019d339d5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 10560 bytes

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