Malicious PDF — malware analysis report

Static analysis result for SHA-256 2906b87fdc27f8dc…

MALICIOUS

PDF

45.1 KB Created: 2020-09-01 13:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5457b9af61777e58ca4650f051abab93 SHA-1: 2184783bd44f1d6cbcda16129f4b1725765883e2 SHA-256: 2906b87fdc27f8dca6e284ed4af00c95d492fec00e0c228fdfbeac16cf89999d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a movie streaming service. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign Shopify-hosted PDFs. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a further stage of the attack.

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/wix?keyword=me+before+you+full+movie++moviescounter
    • https://static.usrfiles.com/ugd/b8c837_42ad7cd5bfc14785bc09d86e4c328895.pdf
    • https://static.usrfiles.com/ugd/b50c55_181a6a83bd49458f8b775e54ddf79f56.pdf
    • https://static.usrfiles.com/ugd/b8c837_9151738f30464518a1a30bcad4501425.pdf
    • https://static.usrfiles.com/ugd/ec0c41_8a39b571e6ae401ab75a5f57da9f122b.pdf
    • https://cdn.shopify.com/s/files/1/0429/4361/1036/files/urine_ketone_bodies_test_manual_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/basel_2_norms.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/71067017865.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/54895907252.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/zopazimodobigoro.pdf
    • https://static.usrfiles.com/ugd/fbccce_e6dca41f04f84b77bc2554dfdb9e9cbb.pdf
    • https://static.usrfiles.com/ugd/0a51c1_7f7376c6bc0a4e7a9b991c2837d7c6f5.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_off00007386.bin
c5e71302520dfd013c7c4d62b347f90a4ab6a137d873238a1558b70d5a60a78c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7386 5124 bytes
font_01_sfnt_off000084fe.bin
9bfda0d7e76cbdaea1ec7d4205f39c0e4b226169a55abbe8002716bbc96d944f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FE 10120 bytes

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