Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0969ea888a31367…

MALICIOUS

PDF

47.5 KB Created: 2020-08-03 05:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5e027b14052cf79bc18a8bfb1da5e2f SHA-1: 12acfbe3096f235353818d500ad0542008d80c1f SHA-256: c0969ea888a313672b394c77e5441cc93b6a766789dc88bcdc4e0c8f66bb4748
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=lava+lamp+random+number+generator'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to a malicious site via the embedded link.

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=lava+lamp+random+number+generator
    • http://weguse.tleconomicpolicyforum.org/uploads/1/3/0/8/130814238/wirerejiput-bedijixidulesif.pdf
    • http://files.keckmanagementroofing.com/uploads/1/3/0/7/130776864/xagesekiram-wazetutuja-natupopupixediz-lilef.pdf
    • http://files.msapa.net/uploads/1/3/1/6/131636683/jogeposij.pdf
    • http://files.pioneervalleykennelclub.com/uploads/1/3/0/7/130776483/8fb6c5b03887c.pdf
    • http://files.westfieldkennels.co.nz/uploads/1/3/1/6/131637374/80f09badf0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/is_0_a_multiple_of_3.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/8032937291.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/dosovixukemeginunumere.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/git_clone_recursive.pdf
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/best_ds_emulator.pdf
    • https://cdn.shopify.com/s/files/1/0437/4829/4807/files/mafiguwireve.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/51628763641.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/83665528605.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/tekikizufurolamitewur.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_off00007af8.bin
6c7e21483c7575cabe277979e2808370e33b4417c73426806e74135b5519b599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 5240 bytes
font_01_sfnt_off00008cb8.bin
45b0e3e0b69872c077f77f88fc0053f99b44c8c57a3ced372d9a11b84eee2144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB8 10632 bytes

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