Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c09ead3a3b0a97…

MALICIOUS

PDF

40.4 KB Created: 2020-08-02 10:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78e69d9b7a62d37245d740cefb61bd26 SHA-1: 6a359148ae219ce96d18643ccb2ef78f28dab14e SHA-256: b2c09ead3a3b0a977db09573732c86f9775e9990ba891cb42d68df8fe4e6afd3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL identified, 'https://ttraff.cc/pify?keyword=image+align+center+css', suggests a redirector designed to lead users to potentially harmful content. The presence of numerous shopify.com links further indicates a large-scale link farm operation.

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/pify?keyword=image+align+center+css
    • http://files.thebotanyscholar.com/uploads/1/3/0/7/130775384/e86badbf2.pdf
    • http://files.prhscheerlions.com/uploads/1/3/2/7/132740423/dulogaja.pdf
    • http://files.humandevelopmentzone.com/uploads/1/3/2/6/132683357/09630004fdbf.pdf
    • http://files.613studentrentals.com/uploads/1/3/1/1/131164239/99ad9c5a0f13.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/gufonatiparodox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/zepisupubowipopanituwofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/neruvikeporazet.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/11874957256.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/banajoro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/73021965513.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/total_gym_workout.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/xamoxejatefexofonufotitej.pdf
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/42838321039.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60527157158.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/87139170785.pdf
    • https://cdn.shopify.com/s/files/1/0431/7252/8292/files/lexizegexowipenomumudenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/59153584802.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_off00005b6b.bin
d4a122b94f402ca04d3cbc0d50d90635a0b21c310dbb7cd8513b7691c44f035a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6B 5056 bytes
font_01_sfnt_off00006c80.bin
ddd2d2f210eeebee3696c8e240f1356b2189464b937fe9e05e3eb9450cbdbd1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C80 12436 bytes

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