Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc828321d02d12e0…

MALICIOUS

PDF

38.6 KB Created: 2020-09-11 10:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 972af545e1c3e391d6e8b70b6fe7f91a SHA-1: d0f1dc3980e819eb3404e3bfe543bc49820f9a8f SHA-256: bc828321d02d12e0c9d0a48f9899b1a7db8de552d8164a44c2c55aa7080d0eda
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that appear to be part of a link farm designed to distribute content. The primary malicious URL is https://ttraff.club/pify?keyword=heresy+meme+template, which likely serves as a gateway to further malicious content. The presence of numerous links and the ML classification strongly indicate a malicious intent to redirect users.

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.club/pify?keyword=heresy+meme+template
    • http://dajajaw.thegriffithgalleryonline.com/uploads/1/3/2/3/132302984/bifojemapo.pdf
    • http://files.herbalist-thehealingearth.com/uploads/1/3/0/8/130874683/5982634.pdf
    • http://xeradogus.adentausa.com/uploads/1/3/1/4/131437595/4fc2d90.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/startup_cost_for_a_food_truck_business.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/fiwisixawowugusutonox.pdf
    • https://cdn.shopify.com/s/files/1/0433/8938/6901/files/27823398846.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/kokigafetofusorax.pdf
    • https://static.usrfiles.com/ugd/b8c837_ceefa6617de046cab9af5e0a9b652215.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_313b29a1486448799bd7fa8feaac309a.pdf
    • https://static.usrfiles.com/ugd/e73fea_e66c71c5e3af4705826c5b90f1d9f064.pdf
    • https://static.usrfiles.com/ugd/30ea26_35e06a4742b24a428d114e5fbd748a61.pdf
    • https://static.usrfiles.com/ugd/5a1791_d13c22283b724e76a04bd216b864719b.pdf
    • https://static.usrfiles.com/ugd/76156b_28850c24ed2740a58a57299d908b5236.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d4187b9a0dc4ddfaf08550547ff3873.pdf
    • https://static.usrfiles.com/ugd/ebbcbd_18f8c3f81cba47c3a348ba8830cc0e2f.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_off00005813.bin
97fa0a2a3822ee2ae5171f38e61532b5b534f8fc9037456499240010a798cffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5813 5028 bytes
font_01_sfnt_off00006918.bin
cd826748d32147c488fc423b5b8dd006f4a5bf26776278ca99c1dc4de180db64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6918 10744 bytes

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