Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b5b58e20ef3fff…

MALICIOUS

PDF

45.9 KB Created: 2020-08-18 14:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01084891a59aa75ce616acf68d67137b SHA-1: 7fb4580b5b62f533c204aeaaeba8bf50b45976f0 SHA-256: e5b5b58e20ef3fff5fdfcb0563e2b081ca92c021385293ebc271f33d396038a3
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to 'Facebook timeline cover design free templates' and the malicious URL 'https://ttraff.ru/pify?keyword=facebook+timeline+cover+design+free+templates'. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=facebook+timeline+cover+design+free+templates
    • http://zizutorid.theprismwithin.com/uploads/1/3/2/6/132681218/rinubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/vurosiguf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/joxonusorogusepako.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/godikuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/5063/8229/files/gewuxirabudebili.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/additional_mathematics_spm.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/blood_hunter_2._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/administracion_de_recursos_humanos_bohlander_12_edicion.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/asteraceae_cladistics_and_classification.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/jixetokapewanizodaweguz.pdf
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/mage_leveling_guide.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_off00007449.bin
74d8aab65cb96937ec4fd702df1c0ec7e18510bba022747112726d35a5e964ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7449 5692 bytes
font_01_sfnt_off00008794.bin
d83129e580dc0bd290c2103e2353a0559c01d8f4f1dc6380312a9b71b844acb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 10152 bytes

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