Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a378922e4a7602…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 03:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa96bcf8dc5e2d941b0e21b0226fc8fc SHA-1: bec78e4ac6db901e9d40c7e99d3b6190ce6fb445 SHA-256: 48a378922e4a7602a44614e87e599c8b1dee56f5d7917954c7fa273b00944320
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.com/pify?keyword=beautiful+boy+book+parents+guide, which is likely used to redirect users to further malicious content. Several other unknown URLs were also extracted.

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=beautiful+boy+book+parents+guide
    • http://tapefir.bestofbothworldsnc.com/uploads/1/3/0/8/130874478/vijoga.pdf
    • http://files.drjustinbacklund.com/uploads/1/3/1/4/131406744/vukijejumulupoj.pdf
    • http://files.foresideandalusianstud.com/uploads/1/3/0/8/130813764/muwif.pdf
    • https://cdn.shopify.com/s/files/1/0432/6182/1092/files/a._n._m_course_information.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/87500147063.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/principais_abordagens_da_administrao_clssica_at_contingencial.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/17649452083.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/16545334327.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/jiduwabezowamaput.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/air_force_memorandum_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/1639724952.pdf
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/ma6566_discrete_mathematics_syllabus.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_off00006d3d.bin
e311f975d06636fe9fd3f11ebaaac91157a68b2491f30ef1ede522df754c4e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3D 5564 bytes
font_01_sfnt_off00008043.bin
44b58c6478a994b823547153b3e3166957339a339b19b8bf9a5c5c0d1cf86ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 10300 bytes

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