Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d874e3e65fb6d1…

MALICIOUS

PDF

64.6 KB Created: 2020-08-17 07:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bf7bf772473582b24b3614acbf66ba4 SHA-1: 5075f92e2c6acbf5b287ba319cf6054f7c1b3459 SHA-256: a3d874e3e65fb6d10cd380aff3ecb0eec0d057758b8d9af6a75677588ef32154
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.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. The primary attack pattern involves luring the user to click the malicious link.

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=bedard+zamana+kya+jane+1959+songs
    • http://files.marketprotech.com/uploads/1/3/2/7/132712324/wewijes-rodedolojes-bolejigetare.pdf
    • http://files.wvcarts.org/uploads/1/3/1/3/131379236/3309144.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/weribetoxodiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/sasexobirad.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/movimiento_circular_uniformemente_variado.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/descriptive_analysis_spss.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/lexofegij.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/19761233990.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/93325956290.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/12960219336.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/bexejiremilugezufiwanafib.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/dojoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/44370114314.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_off00009a06.bin
695f17074abe92642dc075085523d923d64fed292b8d396889b0b52e88a748b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A06 5784 bytes
font_01_sfnt_off0000adc5.bin
4b09421d70684d1fd1fc1fa4ad4822bb97670d6f276f3aef9f73f8b56d8321a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC5 15596 bytes
font_02_sfnt_off0000de65.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE65 16204 bytes

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