Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09f217c4c6b9c01…

MALICIOUS

PDF

43.3 KB Created: 2020-08-25 12:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5426b39c5f2bdc2717af2b475b9caf71 SHA-1: c2eadd4554fe0cea926cd5a99ff03176f8b6dddd SHA-256: a09f217c4c6b9c01ead6fac21d29d49e372e30394f3a7a8fd10524757a3c4258
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to traff.ru, which is used in conjunction with a link farm heuristic. The document body contains text related to 'Android software emulator bluestacks' and the malicious URL. The primary malicious URL is traff.ru, which likely serves as a redirector to further malicious content.

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=android+software+emulator+bluestacks
    • http://pejomut.ohayosensei.com/uploads/1/3/1/4/131437502/baveboliduvupe.pdf
    • http://files.innovativeel.com/uploads/1/3/1/1/131164112/a314b645.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/vidik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/felarogedar.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/91525404493.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9588/files/last_carnival_acoustic_cafe_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/42533616572.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/mukowatigowa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1846/0072/files/coca_cola_brand_identity_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/bagatowimenarojavuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1770/7425/files/84115420031.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/takeboxoxalusoxafefudoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/the_sum_of_its_parts_quote.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/nuvulelinis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/arduino_bluetooth_code.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_off00006c81.bin
f881ab8f36f2e4b4935abfd797654a88e4868e1b830e8ee8ede9e2bb9d0dd854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 5452 bytes
font_01_sfnt_off00007eff.bin
a65df4ce3714bbe995239175d3e0885ef7b750aa0e75a480145a69e820e12ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 9868 bytes

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