PDF malware analysis — malicious · 1d6638322aaeb38c

MALICIOUS

PDF

113.1 KB Created: 2022-06-30 13:46:44 Authoring application: Development Of The Cold War Worksheet Answers descarca (via FPDF 1.82) First seen: 2022-07-15

MD5: 16c89787f9850925836f74b980c8eac0 SHA-1: 7c589f7b48fc5deaf4038702896d977f63f7b942 SHA-256: 1d6638322aaeb38cf0de32ef173ca13184637e9419eb6ff48dcf09923e407b64

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple invisible and repeated links designed to trick the user into downloading a payload. The primary malicious URL identified is http://releasedvarious.site/Development-Of-The-Cold-War-Worksheet-Answers/pdf/amandafullercreative.com. The document body itself contains obfuscated content and URLs, further indicating a malicious intent to deliver a secondary payload.

Machine Learning

Nyx PDF Classifier clean score 0.0007

Heuristics 2

Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE

PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
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://releasedvarious.site/Development-Of-The-Cold-War-Worksheet-Answers/pdf/amandafullercreative.com
- http://releasedvarious.site/Development-Of-The-Cold-War-Worksheet-Answers/doc/amandafullercreative.com
- https://amandafullercreative.com/wp-content/uploads/formidable/2/antarctic-treaty-and-guidelines-project-class-activites.pdf
- https://amandafullercreative.com/wp-content/uploads/formidable/2/consent-for-for-acknowledgement-of-cameras.pdf
- https://amandafullercreative.com/wp-content/uploads/formidable/2/console-table-with-mirror-top.pdf
- https://amandafullercreative.com/wp-content/uploads/formidable/2/throbbing-gristle-the-first-annual-report.pdf
- https://amandafullercreative.com/wp-content/uploads/formidable/2/thanksgiving-reading-comprehension-worksheets-middle-school.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_019_off0001b825.bin` `43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1B825	76950 bytes

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