Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5b369afbb9c50b…

MALICIOUS

PDF

38.8 KB Created: 2020-08-21 13:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 530114baa9626b70880a4612de5f42a5 SHA-1: 1391fc66ef23c4cf627aba60ae55e57210dfab29 SHA-256: ba5b369afbb9c50bb9a4b5ee40a046702839f929fa753c9b096eca90ff7cbc78
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=enzyme+catalase+lab+report+conclusion'. This indicates an attempt to lure the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to potentially malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the phishing lure.

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=enzyme+catalase+lab+report+conclusion
    • http://files.redonesmarketing.com/uploads/1/3/0/7/130740561/5b2dff1b.pdf
    • http://files.motherwilsonswisewords.com/uploads/1/3/1/6/131636914/6413027.pdf
    • http://files.mcmillanvetclinic.com/uploads/1/3/1/4/131410370/356316.pdf
    • http://sabijafi.alittlepeaceayurveda.com/uploads/1/3/0/7/130775388/4741573.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/milling_machine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7264/files/15015890108.pdf
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/anisotropia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/47534808281.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25843483079.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9072/files/annotated_bibliography_example_apa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/game_aoe_1_gametv.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/10085149996.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_off00005b35.bin
954f6276f74503ed80c2afc6bde5fde664ad55d36b5ddbaef6fbedeb77e7ed93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B35 5328 bytes
font_01_sfnt_off00006d3b.bin
13c44165a40064490168e7c1bcab581f06989d0026b43124c4a8faf66845646e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3B 9816 bytes

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