Malicious PDF — malware analysis report

Static analysis result for SHA-256 b795c7c284ad2c8f…

MALICIOUS

PDF

53.7 KB Created: 2020-08-11 00:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1c9e509aaaba3ed5f3c02ff4308c674 SHA-1: df3985cc3f2c0c58c31c6bd08e88e974c2b9242b SHA-256: b795c7c284ad2c8faa7cbb8e070759eb169e6ad946c7104fc2276abb93858eb2
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.com/pify?keyword=ancestor+money+pdf. The document body text and embedded links suggest a lure related to 'Ancestor money pdf'. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of exploit or malicious content delivery. No scripts were extracted, but the PDF structure itself is used for malicious redirection.

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.com/pify?keyword=ancestor+money+pdf
    • http://files.livestockmanagementsystems.co.uk/uploads/1/3/1/3/131384256/tazemexabizexu.pdf
    • http://files.drcano.net/uploads/1/3/1/4/131437005/8266388.pdf
    • http://gifipiras.graceguy.org/uploads/1/3/1/8/131856725/1164255.pdf
    • http://files.highrollerproshop.com/uploads/1/3/1/4/131453062/0cd363dd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/kubigurujuxugepeburorerut.pdf
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/xoveragitipakemavenez.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/law_and_society_steven_vago.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/arabesque_2_debussy.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/98839134666.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/apollo_munich_easy_health_proposal_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/zezox.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/fosazexatalaxogi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1124/2144/files/marikatupavitamudap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/phonics_2nd_grade.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fd.bin
ff54975e3b7413002b5d678f089368ba41b2d0f67e286501597a45b5f32a19f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FD 14200 bytes
font_01_sfnt_off000091a6.bin
474f89b7e4b4f45aaa939e25ab9c128edff64f2a52f0c2db53564c3e1ed6dda9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91A6 5152 bytes
font_02_sfnt_off0000a31a.bin
2f20aaea74c612a16aec180dab73af8cd69ede67270fc3a1714109e5cf365afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA31A 11348 bytes

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