Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f99562366e4b2d…

MALICIOUS

PDF

48.8 KB Created: 2020-08-22 03:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8580653c838233ddc7d0cd440b18bb94 SHA-1: a1e4156f88c5a49338586bb9f5aae16fc18c5e7d SHA-256: 95f99562366e4b2d392761d14ec7f0d926bc2dac228b69233a2d13a4e9347fc6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=restricted+earth+fault+relay+transformer+protection', is flagged as pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external malicious content. No scripts were extracted, limiting the analysis to the document's linking behavior.

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=restricted+earth+fault+relay+transformer+protection
    • http://fixosat.gwgproductions.com/uploads/1/3/1/3/131380005/2b9d444.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/14155885784.pdf
    • https://cdn.shopify.com/s/files/1/0434/5934/6582/files/hiletgo_xs3868_bluetooth_stereo_audio_module_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/3150/8645/files/65064381180.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/psychological_theories_of_deviance.pdf
    • https://cdn.shopify.com/s/files/1/0433/3781/0075/files/jegamoxabiturinin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/laril.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3089/files/vuguvuduzedolav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/83508565690.pdf
    • https://cdn.shopify.com/s/files/1/0443/0174/6332/files/anatomy_and_physiology_coloring_workbook_answers_cardiovascular_system.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/mudivewiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4351/9638/files/stainless_steel_backsplash_sheet.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_off00008064.bin
20cd2c9cb46252b080dc0c50774eab7ef4cb41d7c81120ecfa1deb3634289dfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8064 5504 bytes
font_01_sfnt_off000092f7.bin
3e58914f52bdef1cc30bdc9ffdf757d74c06c4147dd99de818bb507e82b0f3ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F7 10276 bytes

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