Malicious PDF — malware analysis report

Static analysis result for SHA-256 b15b0c4d36f6c7cc…

MALICIOUS

PDF

53.2 KB Created: 2020-08-19 08:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba56e8c2a2dc9d1012297f760ee2dd2 SHA-1: 45bee754753b04b10fb0025baa0e1d118928b126 SHA-256: b15b0c4d36f6c7cc861b0c2f059c2bb06cd650a48952fca82adc8cf5376e894a
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=html+checkbox+form+group, which is likely used to redirect users to a malicious site. Another embedded URL, http://xasukasol.miteyquinflies.com/uploads/1/3/1/8/131860479/e958e99ef57.pdf, also warrants attention. The document body text, though heavily obfuscated, contains references to the redirector URL, reinforcing its role in the attack.

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.com/pify?keyword=html+checkbox+form+group
    • http://xasukasol.miteyquinflies.com/uploads/1/3/1/8/131860479/e958e99ef57.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/material_design_shadow.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/teatro_grottesco.pdf
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/jofutexezababepamumotidu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/bebeva.pdf
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/lazizesutamiwapikijadas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7180/6366/files/nigaxukawaxakenimejifo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/furipisadagemipisabiwen.pdf
    • https://cdn.shopify.com/s/files/1/0434/8667/5108/files/burial_13_dance.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/antimicrobial_properties_of_spices.pdf
    • https://cdn.shopify.com/s/files/1/0436/9701/2890/files/wanuwefosuwurogutiwat.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/51860988921.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000760c.bin
40e8f534bfa1847fac3765bc988463835bd4050e21e833a5514dccd02082f945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760C 5004 bytes
font_01_sfnt_off00008718.bin
8f7efe488efab9286ee06c0b6b14af1c9b7ce86dcb6023a311e548eac25c5a5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8718 15728 bytes
font_02_sfnt_off0000b7db.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DB 4324 bytes

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