Malicious PDF — malware analysis report

Static analysis result for SHA-256 264692092f55c0dc…

MALICIOUS

PDF

60.5 KB Created: 2020-04-06 13:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bf7b099593f995f900cfa9724ed0de22 SHA-1: 40546184fc9f0d490aa8b7a4bd0d462cbb8fe2aa SHA-256: 264692092f55c0dc591681639ba425ca34a27635575655f74903c7d4264113a4
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to redirect the user to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://landlcollaborations.net/uploads/1/3/1/4/131452836/131452836.html#que+es+plastico+polipropileno
    • http://deepdrillinginsights.com/uploads/1/3/0/6/130604193/faruzurunumelubuv.pdf
    • http://queen-bee.shop/uploads/1/3/1/1/131164447/nasemoponema-joliwo-sidujodo-dekivutej.pdf
    • http://recoversooner.org/uploads/1/3/0/7/130775201/bobufipevozapegunoja.pdf
    • http://maya-herbals.com/uploads/1/3/0/2/130289338/jonisubegemul.pdf
    • http://commemorativechoir.com/uploads/1/3/0/6/130604392/roruk.pdf
    • http://detailinggreensboro.com/uploads/1/3/0/2/130291827/nifufuzutojuzusurive.pdf
    • http://onbecominganubis.ca/uploads/1/3/0/8/130814526/zurinugukavumiju.pdf
    • http://togethermsk.com/uploads/1/3/1/3/131398104/5445265.pdf
    • http://epichandmadeknives.com/uploads/1/3/0/8/130874325/5912599.pdf
    • http://thecriticaldiner.com/uploads/1/3/0/6/130639254/zegagira.pdf
    • http://aliveconsultancy.org/uploads/1/3/1/0/131071072/56df62a88cd6.pdf
    • http://mysterclothingbrand.com/uploads/1/3/0/2/130270738/fb4a836ff52c.pdf
    • http://clutchrobinsonbeats.com/uploads/1/3/0/8/130874194/2033747.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_off0000a2b5.bin
0fd86ba2fccd9c34fefd0e7da490884f24dbc9f919b2eb582241885758c63073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B5 9912 bytes
font_01_sfnt_off0000c643.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC643 2652 bytes
font_02_sfnt_off0000cfaa.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAA 16036 bytes

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