Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee8987d487d0df5…

MALICIOUS

PDF

37.3 KB Created: 2020-08-16 18:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04649b8b5adb7e815df500f17c09ae7a SHA-1: fd777fcff22a8fa16c98bce0c96cbfea9266b230 SHA-256: 1ee8987d487d0df5f6f8d27dd157e7982784c040733c981b5b7b391c149d77ed
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely to improve search engine ranking and lure victims. The primary malicious URL is identified as a redirector, suggesting it leads to further malicious content.

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.com/pify?keyword=crane+composites+installation+guide
    • http://sataxaru.alamedhirudotherapy.org/uploads/1/3/0/7/130740169/dewiwabekixepu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/visiwoku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5167/0943/files/security_camera_configuration.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/25486619620.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/vowojokiginuboredumojifop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/74802135935.pdf
    • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/fosefisafup.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/lefitonuliw.pdf
    • https://cdn.shopify.com/s/files/1/0431/3556/5990/files/martin_elevador_de_cangilones.pdf
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/nukomazukofilunala.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_off00005514.bin
96fa57ca4c5c7c444f276e651462e2b7071cce85cafb7bdea4ebb36a393371d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5514 5300 bytes
font_01_sfnt_off000066f1.bin
31aa76059a5f34ad89f3bef895cd76c26ebd059387a354f5c0fb420ea98ae27f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 9876 bytes

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