Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ef6471eead955e8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-02 14:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f6523f8eb8f5f80d4e4866f7b5afa3b SHA-1: 20ad773a542641756119ec4ed4c56257d875bac5 SHA-256: 8ef6471eead955e8b90a03eef35d09a7f2bd310dc7c9c62288ea4143ed018828
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on Shopify. This suggests a phishing or scam attempt designed to redirect users to malicious 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.com/pify?keyword=chief+keef+dont+like
    • http://files.reference-press.com/uploads/1/3/1/4/131454151/5603374.pdf
    • http://files.goldilocksvalves.com/uploads/1/3/2/6/132682655/1649617.pdf
    • http://files.israel-civilian-k9-unit.org/uploads/1/3/2/6/132681201/e9ba7ed92e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/zebeketowumem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/95349878590.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/percy_jackson_the_sea_of_monsters.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/23584602772.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/31348993729.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/fitota.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/61736232161.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/sogitasozarov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/16478280432.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/23906717701.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_off00005e18.bin
f107a9efa52ef6adee3f749eb3761b2a677b8426370cf0ce8475f5c7293cc022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E18 4480 bytes
font_01_sfnt_off00006d4d.bin
aed4e898895d9cd2077a3253b071ad6140c2c0fa3c804d231bd633b223ebd085		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4D 12460 bytes

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