Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2283a442a896050…

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 14:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9849773734feb2937291685e9063d788 SHA-1: e9e52a0dd617b8ad7fe3cd25923a944b9dc57b96 SHA-256: e2283a442a89605027460e4e290f5454052190869fc69a41eb1e9f16f39f36d7
150 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious IOC is the redirector URL https://ttraff.cc/wix?keyword=story+of+christianity+volume+2.

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/wix?keyword=story+of+christianity+volume+2
    • https://static.usrfiles.com/ugd/1a89c8_08e8779ff2634743aa3330a4bf5e4eed.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c1a4d44c4814ca1a96798189c02a791.pdf
    • https://static.usrfiles.com/ugd/a18aa6_3d8bea7dc7e74a9f88538b8000175585.pdf
    • https://static.usrfiles.com/ugd/34ec99_35b7cb77a5854237895840c9dd4fd779.pdf
    • https://static.usrfiles.com/ugd/b28561_e06f4835db8944ae82c35da95a50cec9.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/xokinenikewowusawagejediz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7326/4030/files/retroarch_on_raspberry_pi.pdf
    • https://static.usrfiles.com/ugd/b8c837_382e334395aa4a4f8bcb044adaced5c0.pdf
    • https://static.usrfiles.com/ugd/63d3ad_a251d2a82dc04c618d1809c164a112a5.pdf
    • https://static.usrfiles.com/ugd/18f527_85b6b2b4c1d147cda36ba7394bf9fd54.pdf
    • https://static.usrfiles.com/ugd/b8c837_60818dd9cbe14df4bd4bec0b9b691139.pdf
    • https://static.usrfiles.com/ugd/b8c837_f37a4219abbf4c908fc497beee08c947.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/porurazigutuvajitozubime.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/xezewebibevaxukomavizaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1025/files/descriptive_text_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5139/1907/files/61754457250.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_off00005f4a.bin
656b13751850323d92f1cd5640268df8e4bc7e7f673144fa4989967d8bb92ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4A 5516 bytes
font_01_sfnt_off000071e5.bin
e321b8b5ce17461a69b418c581060fb4e4b5ec65143188796d48d9f53dcd64ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E5 9532 bytes

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