PDF malware analysis — malicious · 8356317e0de7187c

MALICIOUS

PDF

47.1 KB Created: 2020-04-02 01:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 311c39ec5228f891f25d5d8810b3c92c SHA-1: 3bdf0d7f64e0b019e6e6099e80181dd6caa365bb SHA-256: 8356317e0de7187c8d6c1a7414bb756ad91be3141ea0dc01d6db38715a8250ae

94 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, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to an employee stock option agreement and references external URLs. The primary attack pattern involves directing users to a network of linked websites, likely for SEO poisoning or to host further malicious content. No scripts were extracted from this sample.

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://dylanwyke.com/uploads/1/3/0/5/130551718/130551718.html#sample+employee+stock+option+agreement
- http://viktorwilhelmsen.com/uploads/1/3/1/1/131164419/xugunuxazi.pdf
- http://aseedofvision.net/uploads/1/3/0/6/130604547/muxemovese.pdf
- http://filantropower.com/uploads/1/3/0/2/130289379/sipadigut.pdf
- http://centralfloridapavers.org/uploads/1/3/0/3/130323143/1042538.pdf
- http://mapp4life.com/uploads/1/3/0/5/130548070/ninelonalarifego.pdf
- http://gvjhmusic.com/uploads/1/3/1/3/131379380/xewulajosorelimeb.pdf
- http://cleanmellc.com/uploads/1/3/0/3/130313127/8467617.pdf
- http://3wombatspublishing.com/uploads/1/3/1/0/131071035/fagoradi.pdf
- http://mysuppup.com/uploads/1/3/0/6/130621025/sepexozezigagu-favod-mimeporapiwab-wofafexik.pdf
- http://mycreativeservices.space/uploads/1/3/0/7/130776498/zumuwifusukuvako.pdf
- http://ariniyla.com/uploads/1/3/1/0/131069997/2480408.pdf
- http://homesprinklerrepairs.com/uploads/1/3/0/8/130874473/8463002.pdf
- http://mospoundcakesonly.com/uploads/1/3/0/6/130639424/jowefedekotibadezesi.pdf
- http://aspireimmigration.ca/uploads/1/3/0/7/130739974/6369223.pdf
- http://patriciafischertherapy.com/uploads/1/3/0/6/130621113/885307.pdf
- http://taoosso.com/uploads/1/3/1/4/131406621/e4ff8b45.pdf
- http://sawsoundengineer.com/uploads/1/3/0/7/130775071/14aecc63a0c76.pdf
- http://borlandcoinc.com/uploads/1/3/0/2/130270956/f5a6f0e86.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_off00009099.bin` `6d77f0e5e61ebf1bc1f29e976da027eed2263a7978ac20de819d808c57ae2e64`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9099	7884 bytes

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