Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ade327c80f3937f…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 21:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c022925ac27eb50565bae8b5a6f79eea SHA-1: 85798181ee57f5232dba1467d284794d00eabed4 SHA-256: 8ade327c80f3937f2a80dfb1514c2a7bcb69252faaedd8e699c1a2acbe70a830
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.com' is identified as a malicious redirector. This suggests the document is part of a link farm strategy to lure users to malicious sites. The ML classifier also strongly indicated maliciousness.

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=ielts+general+speaking+practice+test+pdf
    • http://files.alliancemasonryrestoration.com/uploads/1/3/1/3/131384250/saxixaxokisudow_fufigelumirupol.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/ford_4000_tractor_parts.pdf
    • https://cdn.shopify.com/s/files/1/0440/7069/9160/files/49665662722.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/pikoxakoxebin.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/setopufekegol.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/koxekewugozudipavabozar.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/zalefuruderefewawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/anime_boy_cool_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/3910221534.pdf
    • https://cdn.shopify.com/s/files/1/0434/1841/9349/files/10013505537.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/kemazuvevudazugavilurom.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_off00005ac2.bin
7001e9bdd33d7782df8f069b6c6cc4bb5aed4bd2b8f24c5c1f39752eda73b1ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 5324 bytes
font_01_sfnt_off00006ce8.bin
777244dfcfa242a4c81f984cc23767933799dadbc41cae3a65cce3e356b9dc46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE8 10116 bytes

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