Malicious PDF — malware analysis report

Static analysis result for SHA-256 84006e753d77a636…

MALICIOUS

PDF

43.7 KB Created: 2020-08-25 15:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66fea7f1c9b7fa820d7393c266c8c43f SHA-1: 06d94f13dfe3e2f36e0512cd954797a04c3ccb4c SHA-256: 84006e753d77a6365c3f13bbb218b948b4267882cad40f3d82fb057a2aed31da
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used to create SEO link farms or to redirect users to malicious content. One of the primary links directs to a known malicious redirector at 'ttraff.com'. While no scripts were extracted, the presence of numerous links, including a malicious redirector, strongly suggests a phishing or redirection attack pattern. The document body itself is heavily obfuscated and contains the malicious redirector URL.

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=infectious+conjunctivitis+guidelines
    • http://files.stamfordbenefice.com/uploads/1/3/1/4/131408954/fobotu_xadamirufo.pdf
    • http://gagejodep.jagerjournal.com/uploads/1/3/2/6/132695213/gakikapitugo_tuparibimuz.pdf
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/14988264085.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.pdf
    • https://cdn.shopify.com/s/files/1/0464/6676/0856/files/3646959390.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/64182884642.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/33221772297.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/xatugililuloni.pdf
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/39573641652.pdf
    • https://cdn.shopify.com/s/files/1/0448/1161/6418/files/irs_pub_915.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_off0000678f.bin
b998c288efcce71834c66ef1c06ab6c5703c3649bb8169cdebeb50f8f350f35b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 4956 bytes
font_01_sfnt_off0000788c.bin
36551835a2eb4e4e3a3f90cd0e218ed5c71bc86a907fa8f0affa37ec93a0d829		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 12952 bytes

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