PDF malware analysis — malicious · a9f25f581e9e237c

MALICIOUS

PDF

82.9 KB Created: 2021-07-18 17:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04

MD5: 754a569334a48351420e01d8da38a13a SHA-1: 763df91adfc4d07b28ef44a7561f77cfe67efac4 SHA-256: a9f25f581e9e237cb69d2372ea0c18af6b2b644da9cd0c9a1c5831d299e9a36a

76 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, some of which are associated with external content, suggesting an attempt to redirect the user. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URIs and the ML classification indicate a potential for malicious activity, likely related to phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.6221

Heuristics 4

Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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 https://feedproxy.google.com/~r/sq/ugae/~3/WVKuihPcy9U/square?utm_term=diaphragm+and+spermicide PDF link annotation
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed92658c96c6301f96a899/1626182245185/12840033768.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d7358b9e53115d672517/1625872181512/81016266143.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f067b7e8e6bb0d4921adf8/1626367927274/exercise_of_comparative_adjective.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e402.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE402	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fc19.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC19	10696 bytes
SHA-256: `e73c9178cabd017b9689bd7761ce88c0220cc165c3a594fa0476f10f97099e78`
`font_02_sfnt_off00011436.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11436	16792 bytes
SHA-256: `3551f003f76c4a77c33f0c48cce9145fd4bb0916cc0ad0bf6c3f42dd655aa3d0`

Open this report in the interactive analyzer, or submit your own file for analysis.