Malicious PDF — malware analysis report

Static analysis result for SHA-256 df413715500714c1…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 21:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c0394e92dcb2218f946010da40d0a05 SHA-1: 58cd42767475d46ca28bda4760d56eb448035ccc SHA-256: df413715500714c178e942bb1a607e64ab111d31a31a315a988283970afe292c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a reference to the same URL. The PDF also contains a link farm heuristic, indicating a large number of external links, many hosted on Shopify. The primary malicious URL is used to redirect the user, likely to a phishing or malware distribution site.

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=sociology+question+bank+for+upsc+pdf
    • http://files.lifecoach-sacramento.com/uploads/1/3/2/8/132814468/7380723.pdf
    • http://files.anglia.id/uploads/1/3/0/8/130874162/2459571.pdf
    • http://files.ranchochamber.org/uploads/1/3/2/6/132680890/a1bb11.pdf
    • http://files.sacredgroundcollective.org/uploads/1/3/1/4/131482941/10a6a.pdf
    • http://xizozek.lvsolidaridad.com/uploads/1/3/1/8/131871871/18b637b4.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/31697795496.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/sukodinobubevena.pdf
    • https://cdn.shopify.com/s/files/1/0438/4266/6656/files/99279435688.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/93969401136.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9365/files/xefezofinexegepevomuwuni.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/rerijukoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/bigusefodusenota.pdf
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/jitewizebetijuwajifaliwuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/11804612137.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/eating_fruits_on_empty_stomach.pdf
    • https://cdn.shopify.com/s/files/1/0428/8954/3836/files/12887420278.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_off00006fb7.bin
da84412eb4e46f1f8172c0b754d8fdf3e23d3ac07a6b2eb1ccb1ce5020129952		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB7 5856 bytes
font_01_sfnt_off000083b5.bin
acd45c06559a860f1cbeb0a8e94d5da7cebac0c5d903604b903e69b6b4562772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B5 10480 bytes

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