Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af7867d9a38c257…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 12:10:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499a6570f31221da2c38455897c5f2f2 SHA-1: 25a2077dfcd4ff46ef3ce9090048f0b2385a9239 SHA-256: 8af7867d9a38c257336f1098587dd5eceae37df6ee7c6dc4dfe559b22603af7a
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to distribute further malware or harvest credentials. The document body contains garbled text but includes the target URL, suggesting a lure related to the game 'Wolfteam'. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to obscure the malicious 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.com/wix?keyword=wolfteam+%25C3%25A7ar+%25C3%25A7alma+program%25C4%25B1+indir
    • https://static.usrfiles.com/ugd/67f5f7_75d953b004b74372a83d8ef2950ce085.pdf
    • https://static.usrfiles.com/ugd/10e3af_b19f9eb2b09e4a51bf61e9604ddbc884.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f843f2230d04802a9bf72260ef7aaef.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_0217b91887c34535a83656ec22281e47.pdf
    • https://static.usrfiles.com/ugd/b8c837_da0e981594ba4776892747714e25d664.pdf
    • https://static.usrfiles.com/ugd/7baf93_44e87a5d41d24d0bb8ee6e9ec830f301.pdf
    • https://static.usrfiles.com/ugd/b85eb0_83fa2ef4d85343c39058ee728d325f90.pdf
    • https://cdn.shopify.com/s/files/1/0438/8293/8520/files/dixilowetotevizezodurud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6273/8592/files/calendar_printable_2018.pdf
    • https://static.usrfiles.com/ugd/b8c837_f54f9318435f4cac88e1bd6d3ad48bfb.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_c4aa0155c6a1474f8a37d23aaf89f951.pdf
    • https://static.usrfiles.com/ugd/97aff7_498c6c1f4872495c91da2be2c9e17b14.pdf
    • https://static.usrfiles.com/ugd/34ec99_b4c1785f5a934590b74fa6d274ed41da.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_off000063f5.bin
2392e53725214b4faf6ac380cd45ffd43640a3ee842b5ab49d62a9942e134af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 5412 bytes
font_01_sfnt_off00007656.bin
6e71585910b4974f2b1fb12fac91c5ec36271d0a864332e5937853813daa631b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7656 11892 bytes

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