Malicious PDF — malware analysis report

Static analysis result for SHA-256 e663c3ca553b0a2b…

MALICIOUS

PDF

36.1 KB Created: 2020-07-30 23:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b31dc38ea5f46cbff4387c742111e48d SHA-1: 5613e225cbb30cd9b6c33143ff4dcea432479ac6 SHA-256: e663c3ca553b0a2b3e4ad0f24feeb4b8d5862a30f3a122ca399449b7a5eb026c
150 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=abertis+annual+report+2020+pdf'. The document body, though heavily obfuscated, appears to be related to financial reports, suggesting a lure for users searching for such information. The presence of numerous external PDF links further indicates a link farm or redirection strategy. No scripts were extracted from this sample.

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.ru/pify?keyword=abertis+annual+report+2020+pdf
    • http://files.kfundtutoring.com/uploads/1/3/1/1/131163959/0e335d.pdf
    • http://files.aqualoscabos.com/uploads/1/3/1/4/131437005/ef0d740e17.pdf
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/0/7/130775747/ba76087889d42.pdf
    • http://files.pinkturtledesigns.co.uk/u
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/77580383859.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/1190553937.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/favabalerivamexof.pdf
    • https://cdn.shopify.com/s/files/1/0432/1089/9624/files/84690308796.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/xigijilo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/jutavetadepuvakajuvogog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/58469100300.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/muxamabetuwebadupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/turevewoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/67644382456.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/12169542363.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_off0000533d.bin
e33e216372500c66374b6e9d4e2365e50a837d0e944fa9176bd9c8c4d5256f6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x533D 5320 bytes
font_01_sfnt_off00006552.bin
cab02d3af4b43a1b07152390324c605a4bb4ad19cb2e7653363eec0fc0b0326a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6552 8904 bytes

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