Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fdcb21f9e4d47e4…

MALICIOUS

PDF

118.4 KB Created: 2020-08-13 03:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c85c09480e27b567bb0239eb398581d SHA-1: bdf4b7910ddc1ecad84260ab2caa00e733bf6a17 SHA-256: 4fdcb21f9e4d47e440dd571ff8a1a3029f8bfdb856b4e111275a13d2e44a5cb0
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=carbon+based+nanomaterials+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the PDF's purpose is to redirect users to malicious infrastructure.

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=carbon+based+nanomaterials+pdf
    • http://files.northwoodsspecialties.com/uploads/1/3/1/4/131409309/fatolutiv.pdf
    • http://files.petraviam.com/uploads/1/3/2/3/132302871/vapogibedopefimaka.pdf
    • http://files.heels2wheels.tv/uploads/1/3/0/9/130969083/geronave.pdf
    • http://files.vintage3djoes.com/uploads/1/3/2/7/132740606/fcde078518.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/after_the_love_has_gone_lead_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/linelitexavelexoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/98729995162.pdf
    • https://cdn.shopify.com/s/files/1/0435/1151/3252/files/calendario_futbol_mexicano_apertura_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/assessment_purpose.pdf
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/putewexi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89186344985.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/91705878039.pdf
    • https://cdn.shopify.com/s/files/1/0431/6725/2629/files/inequalities_on_a_number_line.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/95667973574.pdf
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/columbus_clippers_schedule_2020.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_off00019104.bin
7c33a63fa8cc18e0bdda9cc8102cbe785f752db1b040fe1169af33deae50be03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19104 5232 bytes
font_01_sfnt_off0001a2b0.bin
9aa796aa51648c5f02401010a8ef73d7a1c5bae49464bd187e504d991e535b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2B0 13064 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.