Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ccda9c6e73d772…

MALICIOUS

PDF

34.7 KB Created: 2020-08-05 01:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 601bd3cea1683540f3d1baf20918920b SHA-1: 772c61a94930a15c0bea2d528d3598315d3a99d0 SHA-256: a4ccda9c6e73d77268c518a8a67b2bcce257c3b20328bc05c39fc89e4e4f867f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=captain+sim+757+tutorial+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and references a 'tutorial pdf', suggesting a lure to entice clicks. The presence of numerous other PDF links further supports a link farm or redirection strategy.

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=captain+sim+757+tutorial+pdf
    • http://files.vintageaffiliated.com/uploads/1/3/1/4/131453871/kuxero.pdf
    • http://files.melissabenitez.com/uploads/1/3/0/7/130740049/woset.pdf
    • http://files.davinciscientifica.com/uploads/1/3/0/7/130775229/bowilu-vedov-sutevu.pdf
    • http://zufodex.ghsshield.com/uploads/1/3/1/1/131164312/3562e00b6.pdf
    • https://cdn.shopify.com/s/files/1/0434/8153/0534/files/72899841120.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/78834755587.pdf
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/5545830237.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/77801403396.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/rizopaxatigijisufezab.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/12614480066.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/wexadagepur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/gebizepuxanamepi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1419/files/38202060863.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/60_second_science.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/battleship_movie_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/74395465986.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/idm_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/bunuxu.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_off000047a7.bin
c917567fee3ff5961cf96e3b4dcc132662544117a46327c95e8fd19048f3ae78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47A7 5296 bytes
font_01_sfnt_off000059a0.bin
f3cd9789a29f07925dd04bbb75f92769c6111cb10fdcae1b9740029ca0681d11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A0 10292 bytes

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