Malicious PDF — malware analysis report

Static analysis result for SHA-256 c644501c51faff47…

MALICIOUS

PDF

73.8 KB Created: 2020-08-11 17:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c242f4002c962f58a6105ef385419b8f SHA-1: 31255183f5a60aadde769bcc23eafcab0c1546df SHA-256: c644501c51faff47a3ec173836257d6c0c2946a4dc1a6fec09ab88b9d354263c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=mapa+fisico+politico+de+asia+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic, suggesting an attempt to manipulate search results or distribute content through various means. No scripts were extracted from this sample.

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=mapa+fisico+politico+de+asia+pdf
    • http://files.cfbctoday.org/uploads/1/3/1/3/131381720/789e7c1.pdf
    • http://denefikid.peggymdavis.com/uploads/1/3/1/3/131380107/mimeraro.pdf
    • http://files.beyondthetempestgate.com/uploads/1/3/1/4/131452838/8539142.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/duvujapuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/cursos_de_ingles_basico_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/3499/2025/files/water_pollution_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/pile_driver_sex_position.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/characters_of_fungi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/4393747202.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/83138024921.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_off0000d37e.bin
6e3daf3f132e60e0e83e48a61ec28f23dd199277ff28259a3cba5e6fa66f2043		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 5056 bytes
font_01_sfnt_off0000e4c1.bin
03540eb6d36c5f3ed543b5a4a45fa908104a303bb951f7c133647c1f450c4d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C1 17156 bytes

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