Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbf03b77c9ea1ff…

MALICIOUS

PDF

45.2 KB Created: 2020-07-29 12:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 447e49015ef0380ba2ecc3a429c2a15e SHA-1: e670bd8bc8120d38ffb1f7c29eb34f4890a3ad41 SHA-256: bbbf03b77c9ea1ff44b2b81c5251839b1f0ec1b3a1060c05be87f36bd9d63871
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO-based distribution scheme. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a common tool for creating PDFs from web content, further supporting the idea of a web-lure.

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=best+practice+in+accessible+tourism+pdf
    • http://files.libertyhighchoir.org/uploads/1/3/2/3/132302963/salupudonesux.pdf
    • http://files.woodyglenfarm.com/uploads/1/3/0/7/130776728/de3c362f2d6.pdf
    • http://files.beach-music.com/uploads/1/3/2/6/132695339/lososugufez_botudarufoke_tilularedo_welodisan.pdf
    • http://files.beach-music.com/uploa
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/6470371762.pdf
    • https://cdn.shopify.com/s/files/1/0431/4998/3905/files/musupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/pesobabilijilitil.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/94010162420.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/vegokinoruf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/jezakesunatimafefob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/rerifedixonabowat.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/28367405373.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/nafibapanunir.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/87214728880.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/21443344073.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_off00007325.bin
7f6b6cebdabcba0bf5c4c6bfc914822ba3efd6d169a13fadfd72b854937e8e0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 5372 bytes
font_01_sfnt_off00008542.bin
830b0c7b77c559b6d5c5334b7a38877c6997804ea034f3311bcd45d789256e78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8542 10048 bytes

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