Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8dfa00ca39639bf…

MALICIOUS

PDF

39.3 KB Created: 2020-08-24 06:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f84782a6ac1e1c5892fec44461dea32 SHA-1: d5f79e2afdd52896aa6e84dc11007dad6622f64c SHA-256: c8dfa00ca39639bf8e4d4a485039e119d36c25526bd4673171b0ccc41f42d800
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to an 'evacuation drill report format' and the malicious URL itself. This suggests a phishing attempt where the user is tricked into clicking the link, leading to malicious infrastructure.

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=evacuation+drill+report+format
    • http://files.campspirit.ca/uploads/1/3/1/4/131407233/mubopib_vonudisevesukov_goden_wopojowoxosakaw.pdf
    • http://files.indianacoal.com/uploads/1/3/1/3/131384462/4682341.pdf
    • http://files.enactusguelph.ca/uploads/1/3/0/7/130738978/2593813.pdf
    • https://cdn.shopify.com/s/files/1/0441/1519/8104/files/nipewatubibuzak.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/accra_technical_university_courses.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3778/files/85830319295.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/19681857353.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/71592169883.pdf
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/75887073345.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54954124591.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_off00005dbf.bin
98fa4f303364098e6bab6cf7a68e4ba23421f1f22851ade9e221f620ba9c35f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBF 5140 bytes
font_01_sfnt_off00006f26.bin
23d6c18c0a22a4bd442483b822f2b6892bb273745015908a127aba13475fdb8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 9780 bytes

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