Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5cf7ab4c6cc91b1…

MALICIOUS

PDF

53.4 KB Created: 2020-08-30 16:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49fc70a12d4eba7dd421bd0419b21531 SHA-1: 1bc74545ab7988196fd7a65be75dd57748b81c90 SHA-256: a5cf7ab4c6cc91b19a3080b3819d2b45841472b58b91d92430930cbd0413cc3e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains the malicious URL and a reference to a benign-looking PDF hosted on Shopify, likely part of a link farm. The primary malicious URL is ttraff.cc, which is flagged as a redirector.

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/wix?keyword=k%25C3%25BChle+Schild-Blase+rollt
    • https://cdn.shopify.com/s/files/1/0429/0458/4355/files/17547252002.pdf
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/wowejususosikomejanikexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7261/files/ditabusajozawuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/24125254090.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/winemosalu.pdf
    • https://static.usrfiles.com/ugd/ea78e0_e9fca65b6d754a6190d781cb81c686aa.pdf
    • https://static.usrfiles.com/ugd/837d34_11620792c2fc4131813ba80d08f66bdb.pdf
    • https://static.usrfiles.com/ugd/12f4eb_821c255d38ca431caf9f633a2ea757d0.pdf
    • https://static.usrfiles.com/ugd/804ff6_2750783852c04ecaa7a79e47539384e8.pdf
    • https://static.usrfiles.com/ugd/913720_74b7b92669bf4413bac118c631858718.pdf
    • https://static.usrfiles.com/ugd/0f5b72_c201b1c6c11f4221b1b174b2cac63909.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f8.bin
20d8b56c16c3609fb6e24143b6a369ec569aa48f7b76bf72401f3f946a491cb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F8 3040 bytes
font_01_sfnt_off000070e4.bin
426b4a331ae444ee0c3bcded92c8ec0ed5b4fc31a72d890ad8821dea2e9d292f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E4 5488 bytes
font_02_sfnt_off00008360.bin
5b1de92ccc94280afd666488203d8c64cb10410e137599abeb31acba11cacaac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8360 15628 bytes
font_03_sfnt_off0000b14d.bin
2fbb528c30fae61c70ff4082faa5fece981988df10abad1a91cab371b780b9de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB14D 16192 bytes

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