Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd7b61120bcdd5b…

MALICIOUS

PDF

44.6 KB Created: 2020-03-27 08:38:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: acbcfd85573ab45a86a46660f16401d0 SHA-1: 7f5fa9c486a94fb17740bfa3150be5e0937114cf SHA-256: cdd7b61120bcdd5bf96a8b154af1420510d9ce615b2410ef57d6e169621b2e9b
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains a reference to a user manual and includes URLs that are likely intended to redirect the user to malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

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://opssecurityagency.com/uploads/1/3/0/7/130739603/130739603.html#haier+intelius+washing+machine+user+manual
    • http://mail.amfcleanup.com/uploads/1/3/0/7/130739351/dilejeperumar_ditap.pdf
    • http://inamphoe.com/uploads/1/3/1/3/131380973/dizevej.pdf
    • http://dumpsterrentalsnaples.com/uploads/1/3/0/6/130604140/zizafibibijem-gakuxanawi-lopugenamex-nuvazixir.pdf
    • http://www.bagleyallschoolreunion2019.com/uploads/1/3/0/4/130483772/mexafeges.pdf
    • http://greekexpress.shop/uploads/1/3/0/3/130313037/jejejexo-kutomebuja.pdf
    • http://hostmaster.studiomj.eu/uploads/1/3/0/7/130740258/fuwixaturabifebefilo.pdf
    • http://anakra.org/uploads/1/3/0/2/130288468/5000123.pdf
    • http://sslandimprovements.com/uploads/1/3/1/0/131070420/3919640.pdf
    • http://coloringtodecorate.com/uploads/1/3/0/6/130604532/zositobafukuv-xanodolopag-rokuvo.pdf
    • http://store.rpjandco.com/uploads/1/3/0/4/130483515/c547c8f426.pdf
    • http://ncplbasketball.org/uploads/1/3/0/5/130589213/b9b01f3b979.pdf
    • http://www.penelopesattic.com/uploads/1/3/0/7/130740387/0c3277738.pdf
    • http://correct-dx.com/uploads/1/3/0/2/130287424/pelijofusebagoxarulo.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_off00007076.bin
85b26b05a1089ea65605f93372249d246f633404a08614c1de1078d342afe206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7076 7924 bytes
font_01_sfnt_off00008eec.bin
2b57b2f7c8f3bc38d05bd7e1919dcd7d971d606ce90b2da6579e55cc4e86234a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 16260 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.