Malicious PDF — malware analysis report

Static analysis result for SHA-256 878103b70145fb88…

MALICIOUS

PDF

41.9 KB Created: 2020-08-11 10:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77705e8e96fb66bc501097f5d041ce2e SHA-1: 0405ad2300368d07cc8fa7375cf14c7ebb11758d SHA-256: 878103b70145fb8823fd1823ecb0d6863d76b4f85f9e0e052c8ee00859d6a43e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a link to download a book. The file also contains a PDF link farm heuristic, indicating a large number of external links, with the primary one being to a Shopify domain. The primary malicious URL is reconstructed from the document's content.

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/wb?keyword=love%20in%20the%20time%20of%20victorian%20age%20book%20pdf%20download
    • http://files.charismanorwich.co.uk/uploads/1/3/1/4/131453006/3588f8a3.pdf
    • http://files.stoneycreektamaskan.com/uploads/1/3/0/7/130775292/150bb18c782300b.pdf
    • http://sozunetez.coopshalftime.net/uploads/1/3/1/0/131070374/d5f3e6dcfd8d8f5.pdf
    • http://files.neeshazollinger.com/uploads/1/3/0/7/130738499/janululapa-tifaruwetod.pdf
    • https://cdn.shopify.com/s/files/1/0437/9272/8226/files/80547808324.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/34225791165.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/pumawizagebubipuzaluxefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/analisis_financiero_horizontal_y_vertical.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/87166942277.pdf
    • https://cdn.shopify.com/s/files/1/0437/4983/4901/files/dairy_free_keto_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/weighted_average_cost_of_capital.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/you_hurt_me.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/34324379169.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/wake_me_up_cast.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/26599929335.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/lukezadetuzimak.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/dujuro.pdf
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/nefajevunesa.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_off00006561.bin
f4fede5c4702efc0b5428b81d4a726063e4b76fd356945ff60d3db5cbb821bd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 5688 bytes
font_01_sfnt_off000078a3.bin
b72487cacd1a0f856ed09f750e541abb1f6c061032334c1e742291d8089d023d
pdf-font-stream PDF embedded font (sfnt) at offset 0x78A3 9764 bytes