Malicious PDF — malware analysis report

Static analysis result for SHA-256 238da85f5a4300ce…

MALICIOUS

PDF

44.2 KB Created: 2020-08-08 14:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76a3c4398aab3e9d8f0bf4ddada45d90 SHA-1: 2314eaa57a22caee591af21cf909b83eb616ca95 SHA-256: 238da85f5a4300cec60dbc88294749cfcfb7aa2c0c80d38b48e8b5c0abac39f7
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links suggests a link farm strategy, potentially for SEO poisoning or to host further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=capteur+de+position+cours+pdf
    • http://files.blissfultoppers.com.au/uploads/1/3/2/6/132695551/1429471.pdf
    • http://zikodat.jethuntclub.com/uploads/1/3/1/6/131606552/levijolafadogesi.pdf
    • http://files.flycatchertravel.com/uploads/1/3/1/6/131637919/1026795.pdf
    • http://files.tmichaelstone.com/uploads/1/3/2/6/132695535/zokibatifanijelajis.pdf
    • http://files.headtotoeoldschool.com/uploads/1/3/1/4/131453005/pufakotumun_movawo_zemorojud.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/overcoming_functional_neurological_symptoms.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/23113698117.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/4123197443.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/gaxodosodobamevujeko.pdf
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/91882685921.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/zipebabamuwuruzogug.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/xamopokaxoxexogipuki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/discord_eyes_gif.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/alleen_op_de_wereld_boek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/sapunojuvivorape.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/11555684227.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/1842356895.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_off00006c72.bin
06e033f92864e25437ff897a65e6e2bfa687aaf253e238af09eadc2f3cd80c3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C72 5024 bytes
font_01_sfnt_off00007d91.bin
39c51a5bacfda149c9035bb19f21a065cfda1b6c0bd1034be4362d19be622b59
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D91 11320 bytes