Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab61ae3a8b48dd2…

MALICIOUS

PDF

46.7 KB Created: 2020-08-17 04:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ecbce73a79017f330785ea25e9b66f9 SHA-1: 5095fff17792dafd2be498cc3ed744344a231a55 SHA-256: 3ab61ae3a8b48dd2204121a5075ae0f4e31f0889f0f38756715c04f68b109138
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=chrome+remote+desktop+free++windows+10'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The document also employs a social engineering lure, instructing the user to install a browser extension or update to view content, which is a common tactic for credential theft and malware installation.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=chrome+remote+desktop+free++windows+10
    • http://files.jackiehelderdesigns.com/uploads/1/3/1/4/131483281/6011937.pdf
    • http://files.iamnotmylaundry.com/uploads/1/3/0/9/130969476/wejimugix.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/99087080276.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9066/files/metukowotefefuxesapunep.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/bejasurud.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/28121216797.pdf
    • https://cdn.shopify.com/s/files/1/0447/6072/7703/files/97630497207.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/rofur.pdf
    • https://cdn.shopify.com/s/files/1/0434/1982/8386/files/kojojefolepidopuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/vovekemikazirumelulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2091/8679/files/advanced_catia_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/daresorelowogu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/73097187536.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_off00007919.bin
cf9b36b33ab77822e23403932a11e31b4800a72b10a5af641dce028537bbdf14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 5296 bytes
font_01_sfnt_off00008b18.bin
cc947a497a145d096dbc022ca88f0fe2a6795dc893d794e692a9bdec91e8b003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B18 10192 bytes

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