Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ac89cc803fb415…

MALICIOUS

PDF

50.2 KB Created: 2020-09-17 17:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032120887faabe753367f9226f304944 SHA-1: cc9eb5a695a878f3968fde2131447035c36c7c58 SHA-256: e1ac89cc803fb415d549b7d1fc9a01171571c0c0ffd238a709c73ac4694e4ee5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links. The primary intent appears to be directing users to potentially harmful external sites, possibly for phishing or malware distribution.

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.ru/wix?keyword=xbox+one+controller+parts+labeled
    • http://fusadusuj.hernfarms.com/uploads/1/3/0/7/130739069/liwonujo.pdf
    • http://gelabuwa.insightsplatforms.com/uploads/1/3/1/4/131406861/mubite.pdf
    • http://files.bullengarookadultriders.com/uploads/1/3/2/6/132681596/fomapofegaro-wopigadazodup-zevevamer-tirexilagenizo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5270/9526/files/ats01n125ft_schneider.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/editing_text_disappears.pdf
    • https://cdn.shopify.com/s/files/1/0436/8505/2566/files/accident_report_orlando_florida.pdf
    • https://ae056d70-8411-41c7-8cad-8ff2f16913a5.filesusr.com/ugd/17beed_502e367b08e5485d8695f60ab6b967a8.pdf?index=true
    • https://ab76bb8e-5376-4aba-9b6c-a19db7fcf785.filesusr.com/ugd/fa6f14_7fb49ea635d046f79b01a9d6b670accc.pdf?index=true
    • https://8980c9d2-0493-4edb-a8f3-2f31e7d453eb.filesusr.com/ugd/f80014_2e6f3f73b6664a9fa32c75484b2be892.pdf?index=true
    • https://80d898ce-9d8e-47a3-b2b4-d457986b4f8c.filesusr.com/ugd/3225da_e2d6074695fb4e269dbacf621ff1a7ae.pdf?index=true
    • https://389ad2bc-0b12-4b27-b56c-91bc7be56ef1.filesusr.com/ugd/4fb05f_ca816bd811254acabe3810d68a085dc5.pdf?index=true
    • https://6eff6716-61b8-4e38-9a42-7cc1e0d345fb.filesusr.com/ugd/50988c_a5aa061af9f94319b8b8695d0e55a90d.pdf?index=true
    • 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_off00007ae9.bin
0946ac349746c3a378923d0a7a689948d9692f00394a9df83504091667932c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 5252 bytes
font_01_sfnt_off00008cc7.bin
472c93fdba2a4283048a320f1752ac2f9c9ce263bf76e5783c8d7c531d571480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC7 14580 bytes

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