Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5c12f49382aaa7…

MALICIOUS

PDF

55.3 KB Created: 2020-08-06 17:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 616401467703636ec73229836863037f SHA-1: 1a5f97b7ac2f7f9eba2e3b24fd2f255f1d9392c2 SHA-256: ce5c12f49382aaa7310d35e36007637ecbf7554fc495da9746f3dfc613cb73bc
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bestiario+mitologico+nordico+pdf, which is likely used to lure victims to malicious content. The document body itself contains garbled text and what appears to be metadata from the wkhtmltopdf tool, suggesting it was programmatically generated to host these links.

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=bestiario+mitologico+nordico+pdf
    • http://guput.themysticlivingschool.com/uploads/1/3/0/7/130738696/1384318.pdf
    • http://files.andrewdlinden.com/uploads/1/3/2/8/132815220/fowedusit-dolobitezaju-runukirug.pdf
    • http://files.victoriavisions.com/uploads/1/3/1/4/131438616/5484131.pdf
    • http://files.sarahdupeyron.com/uploads/1/3/0/9/130969700/e901940a0f.pdf
    • http://files.arangillette.com/uploads/1/3/2/6/132683422/3561247.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/vosiluneditebupukobukozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/jitezimenukoto.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/44872702127.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/42841261777.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/13993207836.pdf
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/27585009056.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/tapamoliremutubex.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/59205812098.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7404/files/3183353192.pdf
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/63643627259.pdf
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/soxuzuduvaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/vufaxununosazi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/south_bend_lathe_manual.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_off000096ab.bin
035af6c74b5bafb996a5f58360ac7b8a8ef807a467e2be4029ae8cd64fb8ae91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 5524 bytes
font_01_sfnt_off0000a962.bin
3e6cf58395552590267d574c2da045285d0669972956e31d73899a413aa83c5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA962 11400 bytes

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