Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce135e06c0ae2a8e…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 06:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02fe1301eafa50d4e9b62ad3af8787c6 SHA-1: c29609c8bcac2c3c144e2e8bfc49164c8cc6470f SHA-256: ce135e06c0ae2a8eeea425fc76a935ebb3e883f419d064ff012e12d4126bd2d5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign content on Shopify. However, one critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains text that appears to be a lure related to medical guidelines, suggesting a phishing or scam attempt. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.cc/pify?keyword=acog+practice+guidelines+cervical+cancer+screening
    • http://files.cupparosielee.com/uploads/1/3/1/8/131872138/9038fde.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/spatial_data_gis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/41033819585.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/81486724339.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/rixonebiwaraj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/masozowetaravedo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/12810595486.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/89161501716.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/3251738828.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/dutoteva.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8371/files/74162927514.pdf
    • https://cdn.shopify.com/s/files/1/0450/5419/7910/files/escala_de_alvarado_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/ribisubujegogemafixevo.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_off00006192.bin
b579983348b0bf72ad806137370e70f02ef22e44863505e411b946a2d03732e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6192 5288 bytes
font_01_sfnt_off000073a1.bin
6f6b4b7a17180e4285c3a98175f9634d258ead24fd56eaea4f62f994d5d1105e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A1 10924 bytes

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