Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82756ba307cf264…

MALICIOUS

PDF

32.2 KB Created: 2020-08-15 01:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b53b0c4e6c0e7b0b8525afe4833a459 SHA-1: 177234cc7bb04f5250f2a51d1f35fa58fdd435ac SHA-256: c82756ba307cf264f8c6312d651d121ad5f165a8d5a766e42ccfa38ac42dd030
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Hotel Rwanda' and the malicious URL, suggesting a lure to trick users into visiting potentially harmful sites. The presence of a link farm heuristic further indicates a malicious intent to redirect users.

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=hotel+rwanda+movie+questions+answers
    • http://nujubol.outrageousselfcare.com/uploads/1/3/0/8/130873782/a7a2f745.pdf
    • http://files.ebfisher.com/uploads/1/3/0/7/130775992/nomewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/56904964908.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/66009513914.pdf
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/hemolytic_anemias.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/minecraft_launch_options.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puliwaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/vejivalazazusemo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/feviri.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/bsc_maths_solution.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9830/files/zupatixeze.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_off00004214.bin
0a482f272d7c2442972fd6646e4b6e23d6f9127dab6677056145769b1b8c0812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4214 5208 bytes
font_01_sfnt_off000053bb.bin
11378dc79ff8c48d30176e00dcb3af3d5847fdf6d69d70e64b5d93d1dd8b78c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BB 9508 bytes

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