Malicious PDF — malware analysis report

Static analysis result for SHA-256 84dab249c6fe058e…

MALICIOUS

PDF

40.3 KB Created: 2020-08-21 11:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03e7a3d2488c2e56603818cc9760bb1d SHA-1: 563ceb91f714e1aefefe33588743e460ea11b3ea SHA-256: 84dab249c6fe058e5f96135e32396280a9732a1f27bc42f650a3e71b250a2104
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link disguised as a download for 'Championship manager free'. This link, https://ttraff.com/pify?keyword=championship+manager++free, points to known malicious infrastructure. The document also contains a large number of links to external PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to increase visibility. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=championship+manager++free
    • http://nikibul.expressionsofvoice.com/uploads/1/3/0/8/130874284/lunum-menofo.pdf
    • http://files.ferrillsmarine.com/uploads/1/3/1/4/131438127/3145012.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8852/7014/files/creative_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/18917092996.pdf
    • https://cdn.shopify.com/s/files/1/0432/9721/0532/files/kivebufinixazep.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/technical_drawing_fashion.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/hul_annual_report_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/wimuratudipewizo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/wilobojegavujujepijuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/valassis_p_h-_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0430/9601/5002/files/49528945435.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/935648382.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e1b.bin
499176ba60daa5b30c24b31bfb1c3ddab72191b1437879336c29a164a78061e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1B 5188 bytes
font_01_sfnt_off00006f9b.bin
7c48057f987904e96c85a69b68129e8ca4c0a78ab956d7d902fa87a39f4c2bfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 10844 bytes