Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d2e93dfe28f91c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-07 14:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1b221f1a4169faeff1cc6bb64a4dac1 SHA-1: 801871f0b3fccd1b95ae0dba92da6daf9523f160 SHA-256: b1d2e93dfe28f91ce37f6b71f7d5968d42673efb6a09cf99c705aa49c06d8268
150 Risk Score

Malware Insights

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

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 links, many pointing to Shopify domains, but several to unknown or potentially malicious domains. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to 'sensory evaluation of wine pdf'. The primary attack vector involves tricking the user into clicking the malicious link, leading to a redirector.

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=sensory+evaluation+of+wine+pdf
    • http://jopadaso.devotamath.com/uploads/1/3/2/7/132712358/sojixoto-wiseko.pdf
    • http://files.kendixonartblog.com/uploads/1/3/0/7/130740077/geduriwinozufulila.pdf
    • http://files.rifg.org/uploads/1/3/0/8/130813362/74ecc7addb38076.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/chordata_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/tagisigopaboletuxek.pdf
    • https://cdn.shopify.com/s/files/1/0438/9437/4555/files/vaminakitokekev.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/81262865647.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/31271466707.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/pdf_liberalismo_economico.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/64098815135.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/curso_economia_politica_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0436/4068/4697/files/30446860904.pdf
    • https://cdn.shopify.com/s/files/1/0433/9102/5306/files/nobekoboxexepudurozurijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/kazosovitafumabevavajimu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/56784328332.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_off00006a60.bin
d223e9748c4aadad9bdf81d52982a3519481ed37910c9f99234d751a87ea9d1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A60 5392 bytes
font_01_sfnt_off00007ce3.bin
2d9e4db227c7fe3f1d51234d5e8a5d4b0197f2647266491df8f61ec7cff1ac36
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE3 10124 bytes