Malicious PDF — malware analysis report

Static analysis result for SHA-256 b425ee5147be8985…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 15:34:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da53c937fd7afb88483db816de9b78dc SHA-1: 7d72859881d933893b9ce4e2e799be1c4ed7e6f4 SHA-256: b425ee5147be89858f3f11890816fc26dcb16a6e0439ec585ddce0908fa8f854
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Cisco routing and switching pdf' and instructs the user to install a browser extension or update. This aligns with social engineering tactics to trick users into downloading further malicious content or compromising their systems. The presence of a malicious redirector URL strongly indicates an intent to deliver a payload.

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.ru/pify?keyword=cisco+routing+and+switching+pdf
    • http://files.innerdolphinawakening.com/uploads/1/3/1/6/131606035/kumuvefajolen.pdf
    • http://fimebix.thepatriotoutpost.net/uploads/1/3/0/7/130775320/2e55f.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/ropapavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/wamegi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/limp_bizkit_my_generation.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/pikebuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/67841151283.pdf
    • https://cdn.shopify.com/s/files/1/0443/9130/1286/files/kikovudujukukipuwukikuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/captopril_posologia.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_off00005f59.bin
dcb721be45b7d8a4a2d20c0839b351973e0814cc4b906a2e906c5f25aa1ec7b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F59 5380 bytes
font_01_sfnt_off000071ae.bin
36bd97ef509ea4b23c38c34f3f5a789cb43f5783f18a0badf279e248ffb5ca11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 11660 bytes

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