Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30716741de04cfa…

MALICIOUS

PDF

51.4 KB Created: 2020-08-26 04:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84af812ceb8814a95f6ca5d4f312a9ca SHA-1: 198a907cba607a3f461779e88d9f2b2f3125c0e9 SHA-256: c30716741de04cfa352c4e0c8cc6b84b1c58520c9edf83f156f59c68e76fe952
120 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, pointing to 'https://ttraff.ru/pify?keyword=dieta+1200+calorias+diarias+menu+sem'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which host PDF files. The document body, though partially corrupted, contains text related to a diet menu and the authoring application, suggesting a lure to disguise the malicious links. No scripts were extracted from this sample.

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.ru/pify?keyword=dieta+1200+calorias+diarias+menu+sem
    • http://rupimipo.danavallarino.com/uploads/1/3/1/3/131379732/jolad-jabisaxog-xaxulu.pdf
    • http://files.gabriellemyers.com/uploads/1/3/0/7/130739712/raperunovu-xizenajulela-zomolorowoze.pdf
    • http://bekagujo.bombni.com/uploads/1/3/1/8/131856333/5c3ee6969.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/sesipunupuzitijififozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/visual_studio_compiler_inline_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/9743/0941/files/tamubem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/37488845497.pdf
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/16014270289.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/fortnite_for_mobile._com.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/21439572682.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/dexaligabevujigiseveze.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000680f.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 6744 bytes
font_01_sfnt_off000078f4.bin
8222b28f69563a526063ce1a80ce40c9a63b6ca43e36e725e3ddeb434e81b0e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F4 5292 bytes
font_02_sfnt_off00008ac9.bin
668053555b08121f9043757974e6b277e8d40caaef69434ef685b010645d4945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC9 11900 bytes
font_03_sfnt_off0000b0bf.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BF 4324 bytes

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