Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3643667e74e58a…

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 03:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42ec2666b3b7224cf811f05962b6e0fa SHA-1: 4930ae4ecda469023b7604bf8ebaa368703a84eb SHA-256: 8f3643667e74e58aeb553615e2a18d44799f882d349c49bc747648dceb821caf
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'blankets creek trail map pdf'. The primary malicious URL identified is ttraff.com, which likely serves as a redirector to further malicious content. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility.

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=blankets+creek+trail+map+pdf
    • http://files.briannaholt.com/uploads/1/3/1/4/131406365/bumitamedami-sukilebi-ponojuzorus.pdf
    • http://files.danettemariealbino.com/uploads/1/3/2/7/132712209/7259567.pdf
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdf
    • http://files.landtrustscv.com/uploads/1/3/2/6/132682040/63e372603.pdf
    • http://files.myhillchurch.com/uploads/1/3/0/7/130775221/tiputo_bijutowuxusex_xizenu_nasegefawepu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/zaxukedimifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3280/5527/files/89962372616.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/7608646187.pdf
    • https://cdn.shopify.com/s/files/1/0437/9446/4929/files/tujatewobigomad.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/sanuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/68339373700.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/gukawepunadexixadigapeze.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/847719375.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/92397775537.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53978683100.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/12959636415.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/fafikutetezolikopatav.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/37706353668.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_off00007a49.bin
7dcc99a608d9afb57a16cab2517c27d94808f5153175d157e334f8bc1e6ac1e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A49 5092 bytes
font_01_sfnt_off00008b77.bin
f94d7ed980e781cd8fe45ede22dfac19a5bde6b6f3b1df1fdf62b0d7d3f2d8d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B77 9820 bytes