Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c300c97bca19b76…

MALICIOUS

PDF

48.5 KB Created: 2020-08-11 17:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 649584f5fcc4f102745860ee749d4047 SHA-1: 0e856fc259d6b00d85ad6eab4dfa0d0629f228e7 SHA-256: 4c300c97bca19b764114fea13309d0ca28c956cf6dae2f1816e2b462ddad737f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=altman+z+score+pdf'. Additionally, it features a PDF link farm heuristic, indicating mass external PDF links, with 'https://cdn.shopify.com/s/files/1/0429/4190/7100/files/credit_risk_definition.pdf' being the first listed. The document body, though heavily obfuscated, contains these URLs, suggesting a lure to a malicious site disguised as a financial document.

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=altman+z+score+pdf
    • http://files.jbglynns.com/uploads/1/3/2/8/132815002/1093362.pdf
    • http://jetew.middleforkfirewisecommunity.com/uploads/1/3/1/3/131384635/7478659.pdf
    • http://vilafi.mentaleclipsetheater.com/uploads/1/3/2/6/132695384/lititax.pdf
    • http://files.donciedoodlesohio.com/uploads/1/3/1/6/131607163/vufexejepiwobo-rumilupos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/credit_risk_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/96_buick_le_sabre.pdf
    • https://cdn.shopify.com/s/files/1/0432/8741/2900/files/26334289811.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/aiag_spc_manual_4th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/classical_mechanics_goldstein_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/pokuxitekaxo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/rossi._38_special_snub_nose.pdf
    • https://cdn.shopify.com/s/files/1/0436/0152/6948/files/87609737509.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/37743435112.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/matplotlib_remove_border.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_off00007deb.bin
ae02a972d89f5b01ce3b7ded0b96244a2d21cd5cc3c6e2fb6594b4e2616e0cf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 5340 bytes
font_01_sfnt_off00008ff9.bin
cc695eab676f4da1a48d1fd69853e6317ebed2a02f99608cf0586ba93aca01a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF9 10964 bytes

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