Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef29a6d8612a041…

MALICIOUS

PDF

49.9 KB Created: 2020-07-30 07:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49632c3eab3adee12821836f6296ce47 SHA-1: 38863e56206afbefa81a0a725b401b99121c4014 SHA-256: 3ef29a6d8612a0414da6d155ca34437787d757ab58718bbeb7ef5a79e4ea2d51
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to academic documents, suggesting a phishing or social engineering attempt.

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=ccs+university+meerut+date+sheet+2020+pdf+download
    • http://files.winereviewsbyjacob.com/uploads/1/3/0/7/130776462/wopaja.pdf
    • http://files.beeffoundation.org/uploads/1/3/1/6/131637034/dadigaguxa.pdf
    • http://files.arthurkeeganbole.com/uploads/1/3/2/6/132695586/2da843.pdf
    • http://files.feughdeewest.com/uploads/1/3/1/4/131454986/9028876.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwofejimu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/10444197972.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/34844991019.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/73316202683.pdf
    • https://cdn.shopify.com/s/files/1/0434/7458/3702/files/67717158273.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/wurutavajepevugasox.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/552956366.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/5315536492.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/lamasukutixujinat.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/67872369111.pdf
    • https://cdn.shopify.com/s/files/1/0438/3640/7973/files/xakerasigigixagidabesobuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/66788042370.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_off00008287.bin
78f3794677fffa8e4f8fdae52e249de4d31e184884523a469dc2846d4fbff391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8287 5828 bytes
font_01_sfnt_off00009645.bin
4381db0296f8b2a56466e09d9761e4937a35d24b16a6e2331904f9ac77da1e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9645 10768 bytes

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