Malicious PDF — malware analysis report

Static analysis result for SHA-256 af214b9d5736010c…

MALICIOUS

PDF

35.4 KB Created: 2020-08-09 06:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0770fa184ad1d12d2d1c2a3991454bd2 SHA-1: 8204fc026bbf7b5d474efce09c52310ff39cfc79 SHA-256: af214b9d5736010c0b74b87e8503f57fa6ddba9251bdd731c90158451f2c279e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=alter+ego+5+methode+de+francais+pdf'. This indicates a likely attempt to lure the user to a malicious site for phishing or malware delivery. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=alter+ego+5+methode+de+francais+pdf
    • http://files.kentvalleyfsc.org/uploads/1/3/1/4/131408103/20e3b08.pdf
    • http://files.margaretmcgillivray.com/uploads/1/3/0/9/130969879/raxodo.pdf
    • http://files.albertaaccesstojustice.com/uploads/1/3/1/3/131398338/9fe612d7f.pdf
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/lazaxegokanuforebibajaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/3625/9990/files/agrger_des_fichiers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/tubuwupo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6663/6953/files/67867191480.pdf
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/55536501987.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2614/files/johnny_cash_s_america.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/bijakomepusufot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/57242800504.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/pazetatakuzosujasupixap.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/69374153308.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_off000045c6.bin
782eeffd465e6c6109db3a5cf5c51e5625cbe063416ae4eee6e15012a95d9f83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45C6 5684 bytes
font_01_sfnt_off000058ff.bin
3c1da56ecc3458a8c63285e8bbef74c303b074889f5a8a8feaf3e3ccb48b970b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FF 12168 bytes

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