Malicious PDF — malware analysis report

Static analysis result for SHA-256 806fa1a2168fc499…

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 20:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf46a933e832635e09987f29d08f859b SHA-1: 0fc9ef087016a9a418983708d25679de898b89e1 SHA-256: 806fa1a2168fc499a17d95e5157574458352bd5259910cc3a643445d52f5c36e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The primary malicious URL identified is https://ttraff.cc/wix?keyword=stellaris+empire+builds, which likely leads to further malicious content. The document body contains obfuscated text and URLs, further supporting the malicious nature of the file.

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=stellaris+empire+builds
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/all-_nba_team.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/wuvin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magej.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/monipizi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0344/3361/files/tawazewenuwuzavaxedi.pdf
    • https://static.usrfiles.com/ugd/b8c837_23ac3cd9c2974cd7833a427a091f2e55.pdf
    • https://static.usrfiles.com/ugd/0c268c_065a2ce186904895be760eb6ce0f3a04.pdf
    • https://cdn.shopify.com/s/files/1/0439/2108/0475/files/cervidil_davis.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/5873473702.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/waste_material_used_in_concrete.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/candy_crush_cheat_apk_file.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/68741432936.pdf
    • https://static.usrfiles.com/ugd/b8c837_67a5ee8dde504dfd8d09119a4d987df7.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd7b5b6be6d844899ad8abd74fba38b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffee06910d8b4c089bd896cc3b6c75a7.pdf
    • https://static.usrfiles.com/ugd/277b62_7d7ed3be82724087874003b60ac273c2.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_off00006592.bin
77fc3addbf29ca643a9c886d5bc7b8418ae00c0a9de08a1141dd632d0265b602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 5348 bytes
font_01_sfnt_off00007794.bin
4a4d9672f10188b31f34b9159df244020695fa211ddd4679fb6efe17c2032f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7794 10324 bytes

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