Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e864f0e6c87117f…

MALICIOUS

PDF

48.7 KB Created: 2020-07-27 23:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b84aa75150b6698efa82048136dc1ce SHA-1: 73914f9ac58a40f5385707ef96ba380cf6b4df7f SHA-256: 2e864f0e6c87117fa264f0734a46b8c5b9f99f4f4bde04ea5cba195645d60f4e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=blood+in+the+mouth+italian+movie', which is likely used to redirect users to a malicious site. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create SEO-optimized content for link farms.

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.cc/pify?keyword=blood+in+the+mouth+italian+movie
    • http://files.tylersistersboutique.com/uploads/1/3/1/8/131872042/3118568.pdf
    • http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdf
    • http://files.navsmainevent.org/uploads/1/3/1/1/131163904/9d6a42c0dbae54.pdf
    • http://files.konzacoffeecompany.com/uploads/1/3/0/7/130775490/tumadigemebumewudeg.pdf
    • http://files.davidcareyimages.com/uploads/1/3/2/6/132680808/livox.pdf
    • http://files.navsmainevent.org/uploads/1/3/1/1/131163904/9d6a42c0db
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/monosulijanadudumolinak.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/45347894498.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4350/files/2956394912.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/6386/8573/files/rifemesapevutisigefatazos.pdf
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/19199954920.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/rifuvadegam.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/11979869398.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/lekiriwivofuvag.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/vudimigelibixuwolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/59509646372.pdf
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/potanaribal.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/95940154560.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/4953233674.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_off0000809f.bin
9b4c59626326f6583992a10b841321c92a9707c19371ab305c729c354f5f51dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 4780 bytes
font_01_sfnt_off000090ae.bin
e3c7805e198300ab7861ad2ed7b4cc075acc4a489e74a0a411a37d25a75dedd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x90AE 10760 bytes