Malicious PDF — malware analysis report

Static analysis result for SHA-256 8768d403d724b9a5…

MALICIOUS

PDF

45.2 KB Created: 2020-08-06 02:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bef4e32abd07165441d68f41427ace0 SHA-1: 55dbb83ebcbef3a9a87a94441871f89d24bea28f SHA-256: 8768d403d724b9a596b5eae8fc250b63f1cabd6dfac17cde991dbf0e0b58a730
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=cabinet+mission+plan+pdf, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious content through a network of links.

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.com/pify?keyword=cabinet+mission+plan+pdf
    • http://files.grannysbibletalk.com/uploads/1/3/1/6/131606325/fbd763c88a.pdf
    • http://files.pen-2-paper.co.uk/uploads/1/3/1/4/131438323/tunifu.pdf
    • http://files.curtaingalleria.com/uploads/1/3/0/8/130814043/8528161.pdf
    • http://basub.spcervantes.com/uploads/1/3/1/4/131408027/gadezoladujav.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/51792379921.pdf
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/52781235033.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/zaradukeluwinuborikopu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8941/8657/files/rezuwenodurit.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9287/files/jametuperol.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/80458486056.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/50189244820.pdf
    • https://cdn.shopify.com/s/files/1/0439/7082/2302/files/features_of_globalisation.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/50162057881.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/add_expires_headers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3037/1739/files/4579984309.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/93108080812.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_off00007378.bin
3aa71ff91d534c079af88301ae2d9a5b42ddf537a4dce47535d4964f57b95ed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7378 5136 bytes
font_01_sfnt_off000084d4.bin
2249f7227e62a6aef610703f954dc95b63e71e1d2fba09f34bbccf8ec7c653b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D4 10240 bytes

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