Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf2b821353118b50…

MALICIOUS

PDF

35.5 KB Created: 2020-03-26 06:30:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 99ff9724ddeec71ff4451bf94b9014a6 SHA-1: 9c292ad5810fe934d347166dacbdab0941094e42 SHA-256: cf2b821353118b5048b9c644a2dc0ba45b80e36fd5b260d63e8cd7da2770b3cb
92 Risk Score

Malware Insights

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

The PDF contains a mass of external links, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body itself is largely unreadable, but the presence of numerous URLs pointing to various domains suggests a link farm or redirection strategy. The primary intent appears to be directing users to potentially harmful external 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://wordsmith-sg.com/uploads/1/3/0/2/130292143/130292143.html#factorizacion+por+suma+y+diferencia+de+cubos
    • http://bluebirddollshoppe.com/uploads/1/3/0/8/130813654/5986a804e03c5.pdf
    • http://webdisk.whitehartinwitham.co.uk/uploads/1/3/0/2/130273753/munafa-bumomemajegan.pdf
    • http://swabmasterwus.com/uploads/1/3/0/5/130589430/jotewafafaxo_puxujoloniri_wekukepazawo_vujurekor.pdf
    • http://veronicaadams.com/uploads/1/3/0/6/130639459/xovuwi-gokoxomatagos-bituw-pilojixupog.pdf
    • http://dealofthedaychevyz71.com/uploads/1/3/1/3/131380339/nowosasurotido.pdf
    • http://channel42.fm/uploads/1/3/0/6/130620684/fe3500424246a.pdf
    • http://lifebyarchitecture.net/uploads/1/3/0/5/130539419/4658148.pdf
    • http://www.northsouthappal.com/uploads/1/3/0/4/130489082/9723007ab0.pdf
    • http://norton-musicfestival.com/uploads/1/3/0/5/130590373/motevizimeladiv-jonopivu-sademugatalifu.pdf
    • http://mnhomeinteriors.com/uploads/1/3/0/6/130604327/seforidi.pdf
    • http://www.jandkgunsandstuff.com/uploads/1/3/0/6/130639802/moxip.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b7.bin
7ddb4bb662542fd2197214a105b12124d915b2420abd89bcf0e541c2550ee8de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 7892 bytes

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