PDF malware analysis — malicious · fbefb69be3ccf0e0

MALICIOUS

PDF

39.6 KB Created: 2020-09-28 15:34:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cf2f8133350cecc8d33b83b00a1a7c6d SHA-1: 22b77871ba731f680596c536a9b5fe1534a519c4 SHA-256: fbefb69be3ccf0e0ba76db92ca988605a3794b37bb9d613073d9c2011ae05779

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content. The presence of the URL 'https://ttraff.link/pify?keyword=long+fingerless+gloves+australia' suggests a lure to potentially malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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 https://ttraff.link/pify?keyword=long+fingerless+gloves+australia
- http://files.jhamrick.com/uploads/1/3/1/6/131607321/5307036.pdf
- http://tidux.mammothnest.com/uploads/1/3/1/4/131407921/2a82199.pdf
- http://files.complaintagainstprimera.com/uploads/1/3/1/6/131637054/8450891.pdf
- http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
- http://juduj.teresahiggins.com/uploads/1/3/1/1/131164131/nubona.pdf
- http://laxamije.fonpape.com/uploads/1/3/1/3/131384605/toniviranisale_kipaguvoduti_zidudejelivuvav_zopuxagiwovali.pdf
- http://wotedeked.jessicabullick.com/uploads/1/3/0/8/130814328/3951966.pdf
- http://files.athertonymca.org/uploads/1/3/1/4/131483184/bezabo.pdf
- https://site-1037035.mozfiles.com/files/1037035/vepuminibade.pdf
- https://site-1036923.mozfiles.com/files/1036923/vekamuwukerezewi.pdf
- https://site-1036745.mozfiles.com/files/1036745/josipevetavorepekawava.pdf
- https://site-1037266.mozfiles.com/files/1037266/86125822778.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005c57.bin` `0a31afbeb8c15e699e4f12e383aa35a504dd07f12c35345885f6b79eb46b6177`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C57	4936 bytes
`font_01_sfnt_off00006d42.bin` `65bef1e434fe2114c6d6dd93ed09bc391837f0e20c6fbd502c17304110d6849a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D42	10772 bytes

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