Malicious PDF — malware analysis report

Static analysis result for SHA-256 4435c470a74667f8…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 04:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75abc91abfb718357298992573ed0134 SHA-1: 20b8279547b87f5544560d4822ba04af9611a856 SHA-256: 4435c470a74667f829d46b95d8617a2fe839cbc613bef9924c9849cc9a2d1605
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also contains a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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=cheap+formal+dresses+australia
    • http://files.katherineharriet.care/uploads/1/3/2/6/132682329/rizatitunus.pdf
    • http://files.christinemottram.com/uploads/1/3/0/8/130813409/jexuxamusiwokegonej.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/how_to_celtx_script_on_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/vuwovuzagivawojexe.pdf
    • https://cdn.shopify.com/s/files/1/0462/3692/6103/files/25456890812.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/pituwavinewekusikedubufu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/benny_blanco_roses_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/japevifamufonawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/2009_vw_jetta_tdi_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/africa_map_high_resolution.pdf
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/tatozot.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/94814299311.pdf
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/43622058250.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_off000066e1.bin
f1ed6d8989f2461cb6d301ef0e329de5866087277065b40992666863498015a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 5188 bytes
font_01_sfnt_off0000785b.bin
606a17ef3c25f68d79f076ef0a80b7077f41c82a67dbcf648d4d81e3ea0d0848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785B 9876 bytes

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