Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f32aa4bc6fd36ee…

MALICIOUS

PDF

45.4 KB Created: 2020-07-29 13:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 940e408ee01485a4a19582068c89a807 SHA-1: 56dd9bf6fdd0a777b97dad7c25f8818579436bcc SHA-256: 4f32aa4bc6fd36ee066b3271d7c6018d7e4f97bdc1ddb5ea74692c1d2050d7f7
120 Risk Score

Malware Insights

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

The PDF contains multiple links, with one identified as a malicious redirector pointing to 'ttraff.cc'. This suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'physically based rendering' and 'pdf download', likely serving as a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=physically+based+rendering+from+theory+to+implementation+pdf+download
    • http://files.bloodsugarbikemagic.com/uploads/1/3/1/3/131398530/jugonas-mejijudofuzode.pdf
    • http://files.gooroogivesback.org/uploads/1/3/2/3/132303337/8632073.pdf
    • http://files.silkbridaleaston.com/uploads/1/3/0/8/130814718/kepagesunet-tipet-jixeno-mewokon.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/viviwus.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/51346627960.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gerakofidasetivivirodipel.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/bekebixuzinolumozinezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/wewobijorixagukiwep.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/26888983534.pdf
    • https://cdn.shopify.com/s/files/1/0432/7083/2283/files/47498846358.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/tatefitolofek.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ff4.bin
53ddba5b579e94636527dcb76a6fece9920a3438ee274697cce22961f81e5bb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF4 5692 bytes
font_01_sfnt_off00008323.bin
ca29742d369fb84271047441d44d9df5af6bd3366bd0d619a7465b2a50c9fcb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 10752 bytes

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