PDF malware analysis — malicious · 4cbd2d9cdfaa644d

MALICIOUS

PDF

42.5 KB Created: 2020-03-12 06:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: e65e5eecbabceb98a7b5ed29ebf3f6dd SHA-1: 48c86d0c0a252dd42ea07b58795415aef0dd7a0c SHA-256: 4cbd2d9cdfaa644d15afd6b821f735cce2848363b3bf991d535cbda988e317c4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to a multitude of unrelated domains, likely for SEO manipulation or to host malicious payloads. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the linked 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://lindholm-family.rominastiebenphotography.com/uploads/1/3/1/0/131070842/131070842.html#ajahn+brahm+mp3+chomikuj
- http://snirts.xyz/uploads/1/3/0/4/130435516/liwebebufe_dapusim_kisigidanujo_xiserem.pdf
- http://da-services.co.uk/uploads/1/3/0/5/130539414/xuzewurudos.pdf
- http://nebraskalutheran.net/uploads/1/3/0/6/130620762/1228300.pdf
- http://kitab4all.com/uploads/1/3/0/5/130543154/pewufinari.pdf
- http://www.cslsolution.net/uploads/1/3/0/9/130969700/5064f344d8542e.pdf
- http://www.focusanywhere.com/uploads/1/3/0/6/130604361/turavonupezalim.pdf
- http://donkeytonkacres.com/uploads/1/3/0/8/130814351/e700c67.pdf
- http://www.misshavishamscuriositiesshoppe.com/uploads/1/3/0/7/130738777/101027.pdf
- http://kansascityskateboarding.com/uploads/1/3/0/4/130488286/ef7034c66a5a.pdf
- http://mindbodymovementarts.com/uploads/1/3/0/7/130739776/1117809.pdf
- http://t-vic.com/uploads/1/3/0/7/130739353/lidepefaxokavo.pdf
- http://www.petesplacefamilyrestaurant.ca/uploads/1/3/1/0/131070703/5443299.pdf
- http://www.wonderfulfabrics.ca/uploads/1/3/0/5/130541272/dogejenaboz.pdf
- http://eelibya.com/uploads/1/3/0/6/130603979/8731873.pdf
- http://www.josephaboone.com/uploads/1/3/0/3/130313148/3450729.pdf
- http://northernillinoisfootandankle.com/uploads/1/3/0/4/130436441/5ec1199bf2886c.pdf
- http://spotithomeinspections.com/uploads/1/3/0/7/130776151/kavunexuwa.pdf
- http://www.simplywildsanctuary.com/uploads/1/3/0/6/130639458/988977471bff.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_off00007aef.bin` `5e50bd3a3cbc946a54835abc70dd92bf57b6e24e3bc21adcb0ba72607ee0f87e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AEF	8664 bytes

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