Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce690e5f16eba66…

MALICIOUS

PDF

47.3 KB Created: 2020-08-26 21:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a14f11d01aceff9d63470cd0ac8adf64 SHA-1: 81553905c02942082ed1efe26b8e2d042ca7dcd1 SHA-256: dce690e5f16eba6670279dbc4ccbf4684b13270fa17982573b3eb6e90e6114d6
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is designed to lure users into downloading further malware. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many hosted on Shopify. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be social engineering, leveraging a fake download lure.

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=skyrim+german+language+pack+razor191
    • http://files.michellejnettles.com/uploads/1/3/1/4/131438839/sowip_penomowerox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4603/files/sefizapomirazofabipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/nifewapimefatir.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/51274498800.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/estimulador_del_nervio_vago.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7700/files/foxtel_movies_comedy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/70935766598.pdf
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/historias_de_brujas_medievales_angeles_irisarri.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/xataxozagajududegemopa.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_off00006329.bin
bc2e37af7036fed458cfbfed6fcbf27ef5fe4327344c629a558cfee3f090e5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6329 5604 bytes
font_01_sfnt_off0000763c.bin
9e3ee8bd3aea4bcfa49df2dda79edd95ca491d1d878ff8231583f407ee16a057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763C 10560 bytes
font_02_sfnt_off00009a9e.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9E 16312 bytes

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