Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba707dc8c3c2c56…

MALICIOUS

PDF

52.2 KB Created: 2020-09-02 12:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d5b0540ce239f6f9dd3a2d9ac6d1f0f SHA-1: edc117a52d5e54164de816126cfcc94118d29361 SHA-256: 3ba707dc8c3c2c5653ca1514cad7d9dad4a0aee20d409210f7a83914d03ffa1d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=aaoa+credit+report'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, one of which is 'https://cdn.shopify.com/s/files/1/0433/7165/9414/files/dslr_camera_blur_effects_premium_apk.pdf'. The document body, though heavily obfuscated, contains the malicious URL, suggesting the document's primary purpose is to trick the user into visiting this link.

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=aaoa+credit+report
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/dslr_camera_blur_effects_premium_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/pokila.pdf
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/ritevupikowinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/85025510972.pdf
    • https://cdn.shopify.com/s/files/1/0438/3562/1536/files/towur.pdf
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/distinguish_between_entrepreneurship_and_intrapreneurship.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8725/files/revokemilog.pdf
    • https://cdn.shopify.com/s/files/1/0436/3429/4937/files/lefamoraserutikerisamezu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/wunalovulejotogobifudabi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/17655536170.pdf
    • https://cdn.shopify.com/s/files/1/0433/3636/8296/files/28677220394.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/telecharger_larousse_orthographe_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/35274313467.pdf
    • https://cdn.shopify.com/s/files/1/0458/6605/7881/files/wilagisutojigodesuwe.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_off00008df9.bin
26efbdda1228db16851726d3ab46b4b58a8ad720334dc0dea2f208d8a4508be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF9 4844 bytes
font_01_sfnt_off00009e85.bin
f34ff5926de3fd176d2180c69bc2954bf166eaba79873861715a0a75b8919b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E85 10960 bytes

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