Malicious PDF — malware analysis report

Static analysis result for SHA-256 243df1ce0df4544a…

MALICIOUS

PDF

42.2 KB Created: 2020-08-20 09:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8cf87d265d261a240ce71d72e1796db SHA-1: cf0205b62b530bf12de64f60f934e3c97fceb5e3 SHA-256: 243df1ce0df4544ac129fa539e9b9a6208f6742f245a3a88c42240f0c0f0a415
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link farm and a redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=well+known+reformed+pastors', which is likely used to obscure the ultimate destination of the attack. The presence of many links, including to Shopify domains, suggests an attempt to leverage SEO or create a deceptive appearance. 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.com/pify?keyword=well+known+reformed+pastors
    • http://xumuxuga.corvallisjunkremoval.com/uploads/1/3/1/1/131164250/zurimiwunimetiramovu.pdf
    • http://xegusigok.followoncricket.com/uploads/1/3/1/8/131857334/kepezabunaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/ziduxexifinaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/fahrenheit_451_anticipation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/7850750063.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/64109168857.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/midetidoso.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/equipment_requalification_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0462/8407/9264/files/15002601006.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66456909559.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_off000066c5.bin
e039d61c8f87ee6e07c931cdf42e0137d0afa718ab9c00b9aa937f8dc509bf31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5356 bytes
font_01_sfnt_off000078fd.bin
3d0174d6844f8014d8a8129767abb6c44ea97d195f16ca4887d4ecdabde8d081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 9896 bytes

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