Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42f201b36a482d6…

MALICIOUS

PDF

41.7 KB Created: 2020-09-02 05:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 544382d8d91c32c5ec393121c242b5bc SHA-1: d97461ad0f2d8681fef4f7774b46f4ecfc7fe2e9 SHA-256: c42f201b36a482d65c5f1ce66dad45ddc1d1cc0c1875d54a9202e662a089c36f
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.me, which is disguised as an IELTS answer key. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The embedded URL is reconstructed as https://ttraff.me/wix?keyword=line+graph+model+answer+ielts, which is the primary indicator of malicious intent.

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.me/wix?keyword=line+graph+model+answer+ielts
    • https://static.usrfiles.com/ugd/b8c837_30a319ecbfb8443d8351d97a3c243ee1.pdf
    • https://static.usrfiles.com/ugd/a64c8c_b3dfdd6bcde64996bfef6d0bb51b276a.pdf
    • https://static.usrfiles.com/ugd/5e81b9_5ecdd8dd7482456f85b034f04f7ae184.pdf
    • https://static.usrfiles.com/ugd/e3834b_bab8a14f3b614857a9224b50c08354ef.pdf
    • https://static.usrfiles.com/ugd/a4ea6c_a7022b29153b45339b88c825ad779961.pdf
    • https://cdn.shopify.com/s/files/1/0447/9585/4997/files/anomalous_behavior_of_water.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/australia_open_2020_draw.pdf
    • https://static.usrfiles.com/ugd/f09a9d_4306d8aea5cc4e11813253e611ef6b72.pdf
    • https://static.usrfiles.com/ugd/2f7815_e0186535f8bb41799ce1a8893d129e37.pdf
    • https://static.usrfiles.com/ugd/f63f29_a7e7cf0d42b94269b19a7bb2cf522b86.pdf
    • https://static.usrfiles.com/ugd/7f929b_f2b77268dc3843c0b92252c8cd689f68.pdf
    • https://cdn.shopify.com/s/files/1/0434/3817/8470/files/bengali_latest_song.pdf
    • https://cdn.shopify.com/s/files/1/0439/3861/1355/files/10501770756.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/femumovuniziboladokasewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/77503616286.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/
    • https://static.usrfiles.com/ugd/f09

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ae.bin
f805dfc9aa12fa80910687fb306d99752cf89794ca94ea3f47250d78a5640323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 5408 bytes
font_01_sfnt_off000076fb.bin
bbecdfb066cedd8c974be43f02062cd0af95959ef1ba33daeadc7c90b342ce6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FB 10292 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.