Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9beabb86aceb25d…

MALICIOUS

PDF

72.2 KB Created: 2020-08-12 05:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64d9fdd2e90731b0120b06a4d8bf3f40 SHA-1: 7b480757310d212b67e6e4b15df388528a0adf52 SHA-256: a9beabb86aceb25d13a9afb7072ef0c4b896fd35f825b8bfbbabeabf4b82d7ae
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wb?keyword=discovering%20psychology%20the%20science%20of%20the%20mind%20pdf'. This indicates the document's primary purpose is to redirect users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same 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.cc/wb?keyword=discovering%20psychology%20the%20science%20of%20the%20mind%20pdf
    • http://vonewa.csnons.org/uploads/1/3/0/8/130814297/ba084d73ea.pdf
    • http://files.lebosscodance.com/uploads/1/3/1/8/131856166/4082517.pdf
    • http://gapozorer.landtoseasurvival.co.uk/uploads/1/3/0/9/130969744/dodutogolela.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/bajapijojubovetiwidimonir.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/nugimimarolidebirufev.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/rupilogiwisiforol.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/32296276854.pdf
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/diferencia_entre_cardioversion_y_desfibrilacion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/piwuvugaxiterizexuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/luvupunir.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/8572536903.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/45025074116.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/lebuxibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9332/7008/files/fefoli.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/fellowship_of_the_ring_book_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/94261243211.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/kewidifobusetegoro.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_off0000de01.bin
024c8fe03b4f1be0ba421cf8055f01f91793c923af4ed819e3ffbfdea500b25e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE01 5520 bytes
font_01_sfnt_off0000f0a7.bin
2763d43b39aca008152fbfe62af0d941c017eb7cae5e08bf05a2b284f26040f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A7 10316 bytes