PDF malware analysis — malicious · 7d1939f5212a15c5

MALICIOUS

PDF

26.0 KB Created: 2020-11-09 16:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 539f677efdc8692417bc253abd03314a SHA-1: ea97c2026d09f9e6a5c53b2d9a34c7014c8f737e SHA-256: 7d1939f5212a15c5b63e2d1ae79868832aa339f0c92c10372c94e2c8ec16324e

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure and link farms. The document body, though heavily obfuscated, contains URLs that are also present in the heuristics, suggesting a coordinated effort to lure users to malicious sites. The presence of a malicious redirector link and a link farm indicates an attempt to distribute malware or conduct phishing attacks.

Machine Learning

Nyx PDF Classifier malicious score 0.9984

Heuristics 3

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.
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://cctraff.ru/aws?keyword=error+performing+request+unknown+error
- https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdf
- https://cdn-cms.f-static.net/uploads/4366350/normal_5f8800f37287d.pdf
- https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/raxutubowori.pdf
- https://jibalasimitosex.weebly.com/uploads/1/3/4/5/134528580/mapopisemevode.pdf
- https://seranogi.weebly.com/uploads/1/3/4/2/134265977/retolemobi.pdf
- https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/1309747.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/ruzaganog/nest_doorbell_user_manual.pdf
- https://s3.amazonaws.com/henghuili-files2/ascii_hex_table.pdf
- https://s3.amazonaws.com/tonisefoteka/anime_fighting_simulator_fruits_codes.pdf
- https://s3.amazonaws.com/liguwubore/inheritance_set_book_guide.pdf
- https://s3.amazonaws.com/dutimajizowa/xapud.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000052b8.bin` `3fe66ceef2d4583373368de451d206fce4dacab8301f27c6ebd1122b38d00e54`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52B8	5216 bytes

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