Malicious PDF — malware analysis report

Static analysis result for SHA-256 deadefff4573bf0c…

MALICIOUS

PDF

46.5 KB Created: 2020-08-03 16:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6549fc1e161aa20ab269b2f9f03ca3a SHA-1: 08968e2e5cf734ec32bd81a7f1e4988bef8816d7 SHA-256: deadefff4573bf0c0355b7585d3e260a1f5aae6aa69b0d874ab2eb6877d39427
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains this same malicious URL. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=capacitive+fingerprint+sensor+pdf
    • http://files.barredwoodsmaple.com/uploads/1/3/0/7/130775760/9166758.pdf
    • http://files.adoni-maropis.com/uploads/1/3/1/4/131453998/b3e9b76174be2.pdf
    • http://files.erathcountyhabitatforhumanity.org/uploads/1/3/0/7/130740442/581cf49.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/fibonemigipuru.pdf
    • https://cdn.shopify.com/s/files/1/0436/1581/3795/files/read_the_walking_dead_comic_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/naxoxam.pdf
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/68369219767.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/xafopi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/lugurofuweresufusagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuvinotagug.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/71023228356.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/lumalavavusodapegidofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7397/9043/files/63291832174.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/63222362003.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3397/files/miopa_astigmatismo_e_hipermetropa.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_off00007991.bin
193dacb2ec9c7e963fe0f336231c03f48a24c9c74dfea4b4e18de230484be741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7991 5256 bytes
font_01_sfnt_off00008b85.bin
e4289764febb35b448b6ab5f40d182a8ef5b0044dde563fb7e951b028d22b430		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B85 9716 bytes

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