Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ed3797773152dd…

MALICIOUS

PDF

50.2 KB Created: 2020-07-31 12:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ecb725338b220722181f844e23a0f59 SHA-1: 98336664ef38ad3d2ea1469dc8e8a30fe7073ad7 SHA-256: e0ed3797773152ddb7d596ce20d7ac9324d50718f9c04e6ac4bf72d20a71e864
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, traff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains text related to a calendar, likely a lure to entice users to click the malicious links.

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=malayala+manorama+calendar+september+2020+pdf
    • http://files.eveningsunmusic.com/uploads/1/3/0/8/130873795/zananuzumifetez.pdf
    • http://files.kiddoscatering.com/uploads/1/3/2/8/132814096/vojes-rituzijiwerofi-feboti.pdf
    • http://files.messydogkato.com/uploads/1/3/2/8/132814742/881e2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/mibuzupakifutiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/begebadagoselepiriz.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/muvawewomix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdf
    • https://cdn.shopify.com/s/files/1/0433/4678/8502/files/48430978275.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/77624182443.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/38683754832.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/piloluwen.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/lexofegij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/60965401688.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/weguwasod.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/tepunolemipi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7696/6808/files/tafalumoloz.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8a.bin
976d5eb0700c9b27a4b6965fc01ca7f4aac38077db3e27255b01e474990d87be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 5564 bytes
font_01_sfnt_off00007f53.bin
7d687d33d5be2d7acb0bdfcfc77144345cc148c3856751be0b8e7fa3068a7f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F53 3644 bytes
font_02_sfnt_off00008d6a.bin
cf5ed4f450e5fc1fa31c8ac31b5dbd05637a4ba05cdfa332ae769b600578e534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6A 3024 bytes
font_03_sfnt_off00009897.bin
5237d3fed30a5d4441479e2e29f40780674f8a8a01d366c6e08b8c4b66b807b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9897 9864 bytes

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