Malicious PDF — malware analysis report

Static analysis result for SHA-256 a51791fe88844850…

MALICIOUS

PDF

38.9 KB Created: 2020-08-01 09:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fec3f6b85f924be3b47b75b7643f582e SHA-1: 0684071c93059b7f6b26741c5b0548c19808a514 SHA-256: a51791fe88844850a5956856da9f6af44f9ebb30ad22d7cad945afbe5bc7cae7
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of the redirector URL 'https://ttraff.ru/pify?keyword=javafx+tic+tac+toe+gui' strongly suggests a malicious intent to lure users to potentially harmful destinations.

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/pify?keyword=javafx+tic+tac+toe+gui
    • http://files.girlindia.co.uk/uploads/1/3/1/6/131606739/xinenodozapexuvasuka.pdf
    • http://files.myhealthysunshine.com/uploads/1/3/1/4/131453823/xozaden.pdf
    • http://files.gamelan.com.au/uploads/1/3/2/8/132815742/xovorowax-razirevatulif.pdf
    • http://files.bedsgympie.com/uploads/1/3/1/3/131382274/zawudimasekogotoxizu.pdf
    • http://files.ed-conference.org/uploads/1/3/1/6/131637385/tosodudofopadez.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/89105081174.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/pdf_buddy._market_books.pdf
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/50455747948.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/88415937925.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/nuzumufosexiwasus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/nijinediza.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/61838562546.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/3567255800.pdf
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/lilegekogigodofiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tajutulavepa.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3510/files/7288996226.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_off000058e8.bin
36e8a3cc2f5ed7a961d9ae7ca22f2ff3f523155c9ddcf98320b074978cec0b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E8 4860 bytes
font_01_sfnt_off000069a6.bin
fb0d2d9fc8e29dfd6bbb209f7e7659024ed63154a8029720d0e87fc9fb2b5cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A6 11016 bytes

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