Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4c3c8b7f2facf82…

MALICIOUS

PDF

46.6 KB Created: 2020-08-14 17:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b26c73a69deeee3542d346f512134cae SHA-1: dd031a159eac6fd45ad09ea4767b6ddb60754dba SHA-256: c4c3c8b7f2facf82f2749c07ea152180a82e35d210931f592378c0c77d8ac4ca
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The primary malicious URL identified is ttraff.ru, which redirects to content related to '2019 tamil movies'.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=2019+tamil+movies++in+isaimini.+com
    • http://rudonap.stlukesmetz.com/uploads/1/3/2/6/132681477/4026137.pdf
    • http://files.scaffoldingtheatrecompany.com/uploads/1/3/0/7/130739056/mimafoguvataposobag.pdf
    • http://files.meritcoffeetogo.com/uploads/1/3/0/8/130874254/3851829.pdf
    • http://files.reynoldavet.com/uploads/1/3/1/0/131070173/2162060.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/dobezozudazozijezij.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8494/files/34967860552.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/economic_lessons_from_asian_tigers_japan_europe_and_america.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/ravenloft_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/85794562383.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/31380643020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/baluniruwekasoraw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/vokuku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006af9.bin
9fd44069b3b5aee7f4896462d71d643d85d1602da34ab90422cac02be59108e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 5116 bytes
font_01_sfnt_off00007c47.bin
ca347ecc4827e370392afec14b1fdbf48ef5e34f36fb3cc168803ece31192073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C47 10184 bytes
font_02_sfnt_off00009f1e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1E 4324 bytes

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