Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadeba3b97be210b…

MALICIOUS

PDF

39.6 KB Created: 2020-08-24 05:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14c63bc18be0c073f8fd8bec41a574d SHA-1: db6a0644f71ee9d18421b3605af9defc8f00c6c8 SHA-256: cadeba3b97be210b10304b713a61a8e748a5f6d0642023a20f764c90e9f30b25
150 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, pointing to ttraff.com. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious URL is https://ttraff.com/pify?keyword=spatial+database+with+application+to+gis+pdf, which is likely used to redirect users to a malicious site. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=spatial+database+with+application+to+gis+pdf
    • http://nugifedub.r3space.org/uploads/1/3/1/4/131437774/8761858.pdf
    • http://files.robbieerskine.com/uploads/1/3/1/4/131453252/dovugezovavoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/bonfiglioli_gear_motor_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0447/2619/0234/files/nekakarelelitosum.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/55307459410.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/68932813067.pdf
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/honda_gcv160_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/9421/6599/files/45542581117.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/8913719050.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/45107527940.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/95222558587.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.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_off00005bf5.bin
6aa90d7025f436aa60901c6f96330916e94d5a1094789fa2f856c1ce9ccd5409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF5 5656 bytes
font_01_sfnt_off00006f34.bin
19f19d67c36d6040f82c1181da5a08d0ea8637f3dbc354df7df65978bd61fddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F34 10024 bytes

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