PDF malware analysis — malicious · 68f57fe9eaf2ad81

MALICIOUS

PDF

41.6 KB Created: 2020-03-25 03:10:28 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 2f52ae34faa7c7b7b4da0c16b7ce8f59 SHA-1: f87547e961b54508a0f708ffd7cd67302dd35a50 SHA-256: 68f57fe9eaf2ad81a3ce54ae4d3bdc82e2bec6ba89da9bc84013e7cbf532783d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of this link farm, suggesting the primary purpose is to direct users to a network of sites, likely for SEO spam or to host further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://royalsoftballacademy.org/uploads/1/3/0/4/130475923/130475923.html#actividades+sobre+decenas+centenas+y+unidades
- http://universalsoul.co.uk/uploads/1/3/0/5/130588452/5388819.pdf
- http://mommaleahsgoods.com/uploads/1/3/0/5/130551708/400336e9b.pdf
- http://www.dovecote-missions.com/uploads/1/3/0/2/130271152/napamizumuwe_sebisitadodo.pdf
- http://www.mondokdentalimplantsmexico.com/uploads/1/3/0/4/130488322/wojepasa.pdf
- http://monstacartoons.com/uploads/1/3/0/5/130543148/mugatafokafogu_xobaviwofa.pdf
- http://mail.tennisclub-tiergarten.de/uploads/1/3/0/5/130588934/0e04fae38.pdf
- http://laganbuildingsolutions.net/uploads/1/3/0/8/130813510/d5d7f06.pdf
- http://www.kukrecruiting.com/uploads/1/3/0/7/130738962/4b5c7.pdf
- http://we99ers.com/uploads/1/3/0/8/130814715/5186250.pdf
- http://lovelabridal.net/uploads/1/3/0/6/130604580/f2055acf02.pdf
- http://designmeister.org/uploads/1/3/0/7/130775388/a02df20d922b43b.pdf
- http://desatascosbarcelona.net/uploads/1/3/0/5/130538891/4598883.pdf
- http://energysurveysinc.com/uploads/1/3/1/1/131163858/gudisakama.pdf
- http://uitests.com/uploads/1/3/0/2/130272616/moduzuli.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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/
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006d1f.bin` `2263a148af6d97c65a31b080d76bc3799a4f6b0fe9c6acabdbef480b49e88a00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D1F	8896 bytes
`font_01_sfnt_off00008da9.bin` `e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DA9	2652 bytes

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