PDF malware analysis — malicious · e1a2cc9b575d6afc

MALICIOUS

PDF

45.1 KB Created: 2020-06-07 01:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d6b3e04aa1b9e8cebedf554f6419bac8 SHA-1: 9c8707dbe57871e354b56062edc53ebdd0181e09 SHA-256: e1a2cc9b575d6afcf020c37a7e00da8de78a7aa4204480f4ba21598ee69ae34b

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file 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 contains text fragments and URLs, including 'http://mail.championssportstravel.com/uploads/1/3/1/4/131437369/131437369.html#platinum+god+gungeon', suggesting a lure to external content. The primary attack pattern appears to be a link farm designed to redirect users to potentially malicious websites.

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://mail.championssportstravel.com/uploads/1/3/1/4/131437369/131437369.html#platinum+god+gungeon
- http://dominionlifeministries.org/uploads/1/3/1/8/131871439/wonal_vopuxasumipeke_rabalegukikezuf_tewisufe.pdf
- http://leeeyecare.net/uploads/1/3/0/4/130476818/2307630.pdf
- http://ernestlinkconsultingltd.co.uk/uploads/1/3/1/0/131070904/36ac4.pdf
- http://risingsunsbasketball.org/uploads/1/3/0/6/130620163/6450315.pdf
- http://greatlostlovespellsofisa.com/uploads/1/3/1/1/131164435/kumotowufusunefigetu.pdf
- http://majaskenderovic.com/uploads/1/3/0/5/130551922/e7bc650.pdf
- http://ns2.goldendark.net/uploads/1/3/0/9/130969011/6df42.pdf
- http://mail.lemonade-uk.com/uploads/1/3/1/4/131438592/7347283.pdf
- http://74-123-72-157.mgwnet.com/uploads/1/3/0/7/130739113/wugesan.pdf
- https://xesupul.files.wordpress.com/2020/06/nuwaxemugivezuj.pdf
- https://vozomurazawi.files.wordpress.com/2020/06/fekovisoligarak.pdf
- https://kadipelo.files.wordpress.com/2020/06/53793500151.pdf
- https://povodijagez.files.wordpress.com/2020/06/93569170609.pdf
- https://besodapix.files.wordpress.com/2020/06/84888979259.pdf
- https://dipenafuvepe538297139.files.wordpress.com/2020/06/43087979867.pdf
- https://girepof.files.wordpress.com/2020/06/33193905739.pdf
- https://bojesegok.files.wordpress.com/2020/06/91358009650.pdf
- https://rojapeb.files.wordpress.com/2020/06/17551547820.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000083a5.bin` `ed73e99d11c56aff60757696f88fb2f4803f5caf34e215e1e23ffd2f2b3fc09c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83A5	10900 bytes

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