Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d546e7e2f5dc93…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 18:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79665298614e81665ac1c8ae6542f4d3 SHA-1: 1b7443ef0e90a050b0fae633749f6d029ec18936 SHA-256: f0d546e7e2f5dc93a3f006183613f208db70996ae55318f74904f73045655922
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same URL found in the heuristic. The primary malicious link identified is https://ttraff.com/pify?keyword=bics+full+form, which is designed to redirect the user to further malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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.com/pify?keyword=bics+full+form
    • http://xajewurak.matterbotattica.com/uploads/1/3/1/3/131379530/7ffe2b58df05.pdf
    • http://files.hanahwprintmaker.com/uploads/1/3/0/7/130775129/vunado_wawazupoxekipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0762/2824/files/xemibinew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/57019388932.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/24619738882.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/73043821278.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/94647050503.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/fikozuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/89172054759.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/birebapejonetirujubov.pdf
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/pitoguxanasaju.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9783/files/valve_corporation_video_games.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/riwewibejijovokales.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_off00006074.bin
879029673eff2ef1ba9dcfccddc80219c9a7aef35780ae4e9a3fc24cc5f01a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 4868 bytes
font_01_sfnt_off000070e2.bin
4844a0ca20b16e1711ec7a3eb8b1a53c85565620ede5d24a8c160f9312950bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E2 10136 bytes

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