Malicious PDF — malware analysis report

Static analysis result for SHA-256 3adbb47c2cc5f6f7…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 09:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93a422f401a8dc9a95bcbac2eb083af3 SHA-1: 8dbd2c3c1c893ea0894f95c5d9f0fd8141fdb27d SHA-256: 3adbb47c2cc5f6f79e103da8d3c26c924fddad4890a662141d339fec6acb9c84
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=gm+manual+transmission+casting+numbers'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=gm+manual+transmission+casting+numbers
    • http://files.inhcc.net/uploads/1/3/1/4/131407571/1d92477.pdf
    • http://files.jordanshurr.com/uploads/1/3/0/7/130775387/c92ea1980f.pdf
    • http://files.crispusattucksalumnilettermen.com/uploads/1/3/0/7/130738723/87f4781568d2f7.pdf
    • https://cdn.shopify.com/s/files/1/0431/8104/7965/files/sixadasogokojuzixoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/7607665820.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7255/files/pokemon_black_rom_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/utero_bicorne_y_embarazo_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/85089364576.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/tegovidivubonizepa.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/rewimolatelivosobiku.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/90707243529.pdf
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/tevenewujodaxep.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_off00007116.bin
2f5b5ec388fde7aade56dc0d4628044db036284b688049c85b8987762d212307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7116 5292 bytes
font_01_sfnt_off00008300.bin
930629a8083bce8ac7cc8bb1efd7bd83a9d5774bac302c5bad35e8adfe363806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8300 9848 bytes

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