Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db9f1eb1e9b68c2…

MALICIOUS

PDF

51.9 KB Created: 2020-08-22 12:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aefaeca7ada957dbfcee52c7eff0c52c SHA-1: a62604bccd909e7049a4a54dd18a94a6edb1c5a3 SHA-256: 2db9f1eb1e9b68c29827c1917671c8b9d514ea2361012a0e9c85887538f52431
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious component. The document body itself is heavily obfuscated and contains some of the same URLs, reinforcing the link farm and redirection attack pattern. No scripts were extracted, limiting the analysis of direct payload delivery.

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.cc/pify?keyword=cron+schedule+format+examples
    • http://files.simplyinspiredrentals.ca/uploads/1/3/1/3/131398367/nomewefozufak.pdf
    • http://medame.s1gkusa.com/uploads/1/3/0/7/130775511/rajezatawu.pdf
    • http://nadolijo.digistitchcustomapparel.net/uploads/1/3/1/3/131379290/8424891.pdf
    • http://neperes.farmerequipmentsales.com/uploads/1/3/1/1/131164447/6097109.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/fotopaxojerumemiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/cheat_gta_vice_city_apk.pdf
    • https://cdn.shopify.com/s/files/1/0449/4390/0827/files/worship_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/cardiopatia_isquemica_diagnostico_y_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/files/atropina_prospecto.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1476/files/bhagavatham_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/mekofozoti.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/video_star_apk_softonic.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/zijibewovufarejusa.pdf
    • https://cdn.shopify.com/s/files/1/0436/4225/7561/files/formulas_de_movimiento_ondulatorio.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/xuxikofogigexusajawipu.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_off000088c5.bin
cc4c0434fc0d79669db944fc5fe159c3edd3e2fbfd8973cfa5aac1bc2e598777
pdf-font-stream PDF embedded font (sfnt) at offset 0x88C5 5368 bytes
font_01_sfnt_off00009ad2.bin
877cc5a990958f713604c42c263e4a85dacc572f2231dc1767a7b1c5ad6c4e8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD2 11892 bytes