PDF static analysis report

Static analysis result for SHA-256 3e602de81e494bf5…

SUSPICIOUS

PDF

759.1 KB First seen: 2026-05-09
MD5: dfd128b9a377ae8422b32470cb83457a SHA-1: bb548f257124071db22b67ae3cd8757b08e8f2cf SHA-256: 3e602de81e494bf51a891cff288512a8b7c32bbb40da839201345787552afa05
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a hidden external HTML iframe, which is a common technique for redirecting users to malicious websites. The presence of an unknown reputation URL further supports this. While no scripts were extracted, the iframe points to a potential drive-by download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0011

Heuristics 4

  • PDF contains hidden external HTML iframe high PDF_HIDDEN_HTML_IFRAME
    PDF bytes contain a hidden zero-size HTML iframe pointing to an external HTTP(S) URL. This is a strong malicious dropper/redirect indicator and is not expected in ordinary PDF content.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic (matched inside decoded stream)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://www.ereading.cz/mamu.htm In PDF document text
    • http://www.monotype.comMonotypeIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://ns.adobe.com/iX/1.0/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/sType/ResourceEvent#In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ManifestItem#In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xmp/InDesign/privateIn PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/g/img/In PDF document text
    • http://ns.adobe.com/pdfx/1.3/In PDF document text
    • http://ns.adobe.com/swf/1.0/In PDF document text
    • http://www.w3.org/1999/xhtmlIn PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • https://www.verisign.com/rpaIn PDF document text
    • http://ocsp.verisign.com/ocsp/status0In PDF document text
    • https://www.verisign.com/rpa0In PDF document text
    • http://crl.microsoft.com/pki/crl/products/CodeSignPCA.crl0In PDF document text
    • http://www.microsoft.com/typographyIn PDF document text
    • http://www.monotype.com/html/mtname/ms_arial.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlhttp://www.monotype.com/html/type/license.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 13

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00031135.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31135 2004 bytes
SHA-256: a2778816662854461593f780c0f071397d13372f8a0f75251bfded6fa8c720b0
stream_040_off0003d15d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3D15D 367087 bytes
SHA-256: b8e2518b116c26bab0e9f8c1672daf405dedad561157502b657e9005be2029aa
stream_053_off000777db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x777DB 15207 bytes
SHA-256: 1ed73bc4df250e288e714d7c2dd073d4bdca258fc0652ba601eb8f5e77e0f80a
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.45, consistent with packed or encrypted content.
font_00_cff_off000718ff.bin pdf-font-stream PDF embedded font (cff) at offset 0x718FF 2444 bytes
SHA-256: 81870cce987aaff185400b97c4b440d19dd4a5df8b6523ccc9efd19bbb0bf570
font_01_cff_off00072061.bin pdf-font-stream PDF embedded font (cff) at offset 0x72061 3374 bytes
SHA-256: f469cb59e7061bb57926825fcb02a32b855bbafc671bc67138596fc9b98f76d3
font_02_cff_off00072a72.bin pdf-font-stream PDF embedded font (cff) at offset 0x72A72 1330 bytes
SHA-256: 3e29fdfe48392593c56d4a26e43269458bea91c6e557de1f787acc109a7cceef
font_03_cff_off00072f55.bin pdf-font-stream PDF embedded font (cff) at offset 0x72F55 4393 bytes
SHA-256: ece2af3d1ff4be4d70d1d002648d6429ddc7e18899a087c3113b1d8e912c9a0c
font_04_cff_off00073c54.bin pdf-font-stream PDF embedded font (cff) at offset 0x73C54 2237 bytes
SHA-256: c0b2e304a66d4792bed8f6823fadc6312a49eaf1b20da25b662caa089e9cf4be
font_05_cff_off000747a5.bin pdf-font-stream PDF embedded font (cff) at offset 0x747A5 13178 bytes
SHA-256: 1ac0ee7dd5f4aa0355cc628f094c0f100e4e7bdf80525db29064dc5a75573058
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.47, consistent with packed or encrypted content.
font_07_cff_off0007abec.bin pdf-font-stream PDF embedded font (cff) at offset 0x7ABEC 6075 bytes
SHA-256: eb0d17d5c223ca4b6c08462e0f9d5c83b3c0467fb964f0dd61fcf4da2dcb8afd
font_08_cff_off0007c144.bin pdf-font-stream PDF embedded font (cff) at offset 0x7C144 9742 bytes
SHA-256: 49b5009d08af0ce065a4633faf9869338a3f4ab5f5935e79e55258addbdd158a
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.40, consistent with packed or encrypted content.
font_09_cff_off000820ae.bin pdf-font-stream PDF embedded font (cff) at offset 0x820AE 4468 bytes
SHA-256: 4eab87c4b0e348a284dd931d2d25a3a69177cd88644f3c1c9f647d6fc583aacc
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.41, consistent with packed or encrypted content.
font_10_cff_off0008339e.bin pdf-font-stream PDF embedded font (cff) at offset 0x8339E 6291 bytes
SHA-256: da75e32b3c061e995a1a0fc8ee15b9c1618615d1a6259dd68e91c55d2464a338
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.40, consistent with packed or encrypted content.

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