PDF malware analysis — malicious · 6f8746164bbb36be

MALICIOUS

PDF

41.3 KB Created: 2020-04-02 13:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: ec9f7bfef2159964698eaa54766cb1ea SHA-1: 028b74335a4d4e16e34fdacd20279dba96d28d50 SHA-256: 6f8746164bbb36bef9ed3fbc323b73669ade9bd674ecbee69b7d6f1151a76df4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files. This behavior is indicative of a link farm or SEO manipulation tactic, but given the malicious verdict, it is more likely used to distribute further malicious content or to evade detection. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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://adventuredanang.com/uploads/1/3/0/5/130590403/130590403.html#passmark+performance+test+9+serial
- http://xuemeirhodin.com/uploads/1/3/0/9/130969754/gebibu.pdf
- http://rhinobullybook.com/uploads/1/3/0/3/130323097/8440008.pdf
- http://clickngo.net/uploads/1/3/0/6/130620985/davijigalazuku-tedajekumuneluk-jiguwivimob.pdf
- http://madeinoklahomafest.com/uploads/1/3/1/1/131164488/jaloretufudu-gunibenitogo.pdf
- http://thecarvingartistshoppe.com/uploads/1/3/0/6/130620672/798e4191.pdf
- http://angelas24.com/uploads/1/3/1/0/131070843/rupiwepa.pdf
- http://notyetshop.com/uploads/1/3/0/4/130483808/e7d683fd5.pdf
- http://proskillconsultancy.com/uploads/1/3/1/3/131379525/7187791.pdf
- http://visagespabaac.com/uploads/1/3/0/6/130640139/luwexigeredebep.pdf
- http://patosgatos.com/uploads/1/3/0/6/130621531/kebenukixume-bivewotoxezawa.pdf
- http://livingyourlegacy.net/uploads/1/3/1/3/131381003/sixikosujumopirop.pdf
- http://ktectrading.com/uploads/1/3/0/6/130621503/nixadolonozuriwogedo.pdf
- http://jetcraze.com/uploads/1/3/0/8/130814575/9c1212aeb.pdf
- http://keenanforever.org/uploads/1/3/1/4/131437615/zujexotijasetefi.pdf
- http://michellesellsidhomes.com/uploads/1/3/0/7/130739616/zurarenopikigiborad.pdf
- http://shelliejacobs.com/uploads/1/3/0/8/130815097/ziged.pdf
- http://myfiberworksllc.com/uploads/1/3/1/0/131071038/7653504.pdf
- http://netflixcenterhelpid812.com/uploads/1/3/0/8/130813135/nevawofelo-zadidojisaz-jevon.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_off000076f8.bin` `1dcc92a1dd24223670cdad7eb0eee51046cf3c10e2dac78aad1f6b642b92e3ef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76F8	8652 bytes

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