Malicious PDF — malware analysis report

Static analysis result for SHA-256 c750681015ce842c…

MALICIOUS

PDF

52.3 KB Created: 2020-08-23 22:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02380205e8d6b309f704b0dbb5d38423 SHA-1: 03a010eb2e684d11963de9c356952d46bcaf04ec SHA-256: c750681015ce842c1672ce0e75e8e11fac49dd1a99e2107b93a32c465e02f993
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users with the promise of free movie apps. The document body, though heavily obfuscated, also contains this URL. The presence of numerous other PDF links, many hosted on compromised-looking domains, suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=best+free+movie+apps+android+2019
    • http://files.camilleplatt.com/uploads/1/3/0/7/130775859/92acba88b7ac37d.pdf
    • http://gatajik.somethingbymelanie.com/uploads/1/3/1/4/131408899/8426461.pdf
    • http://files.chrishhphotography.com/uploads/1/3/1/0/131070483/nikis_zogejo_woxobol_dixom.pdf
    • http://puwaru.uufellowship.org/uploads/1/3/1/3/131379578/d0891376caab1.pdf
    • http://neduz.ericahitzmanart.com/uploads/1/3/1/4/131482803/zatotigarovubizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/nefebetonejusunagalosizo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5555/2414/files/taxonomic_categories.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/a_level_economics_revision.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/nitrogeno_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0436/9347/3947/files/93876455207.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/tosodafefavosofot.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/rokixofegupikutubizasixud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/challenging_calculus_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7112/files/31515291199.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/zilosogivivamebugexivun.pdf
    • https://cdn.shopify.com/s/files/1/0430/7301/1863/files/85499613945.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f7d.bin
09650abf5c76c68d7562e2aa5a6750fd4fa7e112d763d0d66542055023da0153
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7D 5536 bytes
font_01_sfnt_off00009238.bin
dfb31873331522d831622a36402985daadcee0bdba48c73d8effa98f136f7933
pdf-font-stream PDF embedded font (sfnt) at offset 0x9238 10364 bytes
font_02_sfnt_off0000b5c1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5C1 4324 bytes