PDF malware analysis — malicious · a9fc690c4ff56c28

MALICIOUS

PDF

46.4 KB Created: 2020-03-30 06:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: a07536f17ca3dc2918848d796e8eeae9 SHA-1: e4a659ca80523244d6971f3b463077b185b415d9 SHA-256: a9fc690c4ff56c2845a785f15b08da294278b53fd78ef6e63773e30f59de16fa

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links to various domains, a technique often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness. The document body is heavily obfuscated and contains what appears to be junk data, but also includes a URL that matches one of the extracted external links.

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://webdisk.collegedemsatiu.com/uploads/1/3/0/6/130621305/130621305.html#multiplication+table+to+30+pdf
- http://mxjoinus.net/uploads/1/3/0/4/130488196/8190991.pdf
- http://aspccc.com/uploads/1/3/0/4/130488414/0b924c5ada.pdf
- http://theexperience.studio/uploads/1/3/0/6/130621094/gowukas.pdf
- http://thebernieproject.org/uploads/1/3/1/0/131070198/1782860.pdf
- http://tracyandersen.com/uploads/1/3/0/4/130490019/9691230.pdf
- http://hellomamayoga.com/uploads/1/3/0/5/130551083/d92232c.pdf
- http://executivepetresort.com/uploads/1/3/0/7/130740166/8474337.pdf
- http://evanlanterman.com/uploads/1/3/1/3/131383649/4964144.pdf
- http://hireananny.ca/uploads/1/3/0/7/130739456/3753835.pdf
- http://drinksdhaba.com/uploads/1/3/0/7/130775309/bcbe8f26be04173.pdf
- http://alice-paul.com/uploads/1/3/0/5/130544070/kigeroru.pdf
- http://tulumexpress.com/uploads/1/3/0/6/130604788/zamur.pdf
- http://apevictorhugo.com/uploads/1/3/0/2/130289774/zimerizibedat_wanoxaworumokik_fukodilide.pdf
- http://mrsbhatt.com/uploads/1/3/0/2/130270834/5169835.pdf
- http://www.sport-link.co.uk/uploads/1/3/0/6/130639356/pikejuk-fijobemez-sobewapijoto-daririfobe.pdf
- http://scruff2buff.com/uploads/1/3/0/7/130775321/pujikuferota_fobejamebesi.pdf
- http://selwyn-perrys-choice-books-music-and-art.com/uploads/1/3/0/7/130740562/7ae4b632105689.pdf
- http://aftersales.nopeus.eu/uploads/1/3/0/6/130620366/ca18670b9ff78.pdf
- http://all-car-parts.net/uploads/1/3/0/3/130380084/1952037.pdf
- http://zonchemy.com/uploads/1/3/0/5/130588976/6989646.pdf
- http://lumcraft.org/uploads/1/3/0/4/130436197/8007194.pdf
- http://synergycapitalresources.net/uploads/1/3/0/4/130435670/6594958.pdf
- http://sunsmilesusa.com/uploads/1/3/1/3/131381769/f8b6ccaa.pdf
- http://scarlettsbowcompany.net/uploads/1/3/0/4/130490668/zaladi.pdf
- http://diarmuidpatricksheehan.com/uploads/1/3/0/6/130620387/7385656.pdf
- http://sunsmilesusa.com/uplo
- 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_off00008e0d.bin` `3795585568fd207033e78e47def833ef6ac9e3ccdcc82569aec1b22750b2916a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E0D	7700 bytes

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