Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fe98e2e2518ec4…

MALICIOUS

PDF

50.2 KB Created: 2020-04-12 20:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 45de7d2ce3c9ebca045024fea29734b3 SHA-1: 7f0372e1cae0daf6170566a4f5b7b958e91e1cd3 SHA-256: e8fe98e2e2518ec4f4ed3fa6f06f2362123705a300d46d61c844a190788626e1
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO manipulation or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating the document's primary purpose is to act as a gateway to other sites. The embedded URLs point to various domains, suggesting a distributed infrastructure for hosting content or further redirection.

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://thetruth4me.com/uploads/1/3/1/4/131406505/131406505.html#en+que+alimentos+se+encuentran+las+moleculas+inorganicas
    • http://mhssportsclub.com/uploads/1/3/0/2/130291707/serip.pdf
    • http://dolonlearningresources.com/uploads/1/3/0/8/130814408/1405115.pdf
    • http://katherinecrossing.com/uploads/1/3/1/4/131453915/4251541.pdf
    • http://kokospreads.com/uploads/1/3/0/7/130740191/musosupa.pdf
    • http://earlmobile.com/uploads/1/3/1/4/131453130/birasodugedozo_pivomabak_warajimi.pdf
    • http://www.sheffieldlaptoprepairs.com/uploads/1/3/0/5/130588905/2273732.pdf
    • http://andrewxiwu.com/uploads/1/3/0/4/130483737/kiwofodusebikipulu.pdf
    • http://terrifiedwhiteys.com/uploads/1/3/0/5/130551986/36e44cc7.pdf
    • http://samsungservicecenter.net/uploads/1/3/0/5/130551727/zikux.pdf
    • http://hawaiianmonarchcoffee.com/uploads/1/3/0/7/130738484/25ee54647f.pdf
    • http://calgarycigars.com/uploads/1/3/0/7/130739238/d0d8cc77f2a4.pdf
    • http://kolumbus.be/uploads/1/3/1/4/131406982/1836866.pdf
    • http://evejeanetteblohm.com/uploads/1/3/0/3/130323593/xukuderup.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_off00008488.bin
35ffdada2abdbea710b607eade9ae24845831bfbb36db113fb41d62fa4a4e9f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8488 9052 bytes
font_01_sfnt_off0000a528.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA528 16036 bytes

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