Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a065d5d07f2c9d7…

MALICIOUS

PDF

66.0 KB Created: 2020-08-09 17:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1adca9c26824ffc5d8250ac75efbf67 SHA-1: cbbbec516a2adc366c3798a035d7d23bbeca7be1 SHA-256: 2a065d5d07f2c9d726d8fa37899f30d2f2b73f8821c737263d4587f0076b64ee
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.com', which is flagged as malicious. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely to manipulate search engine rankings or distribute further payloads. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the presence of a malicious redirector and the link farm structure suggest a phishing or malware distribution attempt.

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/pify?keyword=vba+excel+pdf+email
    • http://files.andrewcollinsart.com/uploads/1/3/0/8/130873941/noviwe.pdf
    • http://files.jennajordanart.com/uploads/1/3/1/3/131383743/2b2ae.pdf
    • http://files.elevatorboygallery.com/uploads/1/3/1/6/131637218/pekapuded.pdf
    • http://pekira.nisslelaw.com/uploads/1/3/2/7/132712207/9560166.pdf
    • http://tuvaxija.thegoddessattainable.com/uploads/1/3/0/9/130969204/3401642.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/iphone_5c_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/justified_season_1_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwunojipodaga.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/school_calendar_2020_to_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/51551979438.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/sociology_vs_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0440/4540/2277/files/oneplus_5t_root.pdf
    • https://cdn.shopify.com/s/files/1/0439/2442/2811/files/40352128100.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/xokavekixilive.pdf
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/22382960140.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/niwugenezajepelap.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/welubud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/on_the_theory_of_the_brownian_motion.pdf
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/vikarozubokoz.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_off0000c317.bin
edfc3d31de089fbd70441af6fe55d3a5b93c4fdac9383f3c0110b4f57d73613b
pdf-font-stream PDF embedded font (sfnt) at offset 0xC317 5200 bytes
font_01_sfnt_off0000d4c3.bin
c353c3a233dac8d90df4d1045e7a06762df53a0cd28379a735ea22ab0dde19ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C3 11780 bytes