PDF malware analysis — malicious · 91b2d3eecb2d62bc

MALICIOUS

PDF

143.1 KB

MD5: 1ccc09e9f49b8a2d49f69e301c035093 SHA-1: 055e99e377bb6c91252ffe53b3e2bd6eaf29ef66 SHA-256: 91b2d3eecb2d62bc97cef3bd68e30ad335a3ce545ae5cc303863457e2354b6b1

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits characteristics of a phishing lure, including being image-heavy with a click-outward action, designed to trick users into interacting with embedded content. A significant embedded file, 'embedded_file_obj0003.bin', was detected, suggesting it is the primary payload. No JavaScript or VBA scripts were extracted, and the document body was unreadable, limiting further analysis of the immediate user-facing intent.

Heuristics 8

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 143 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (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.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xfa/promoted-desc/

Extracted artifacts 13

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `f71bdf9c49e7bebc43f027bd189873264b901faea4fec74a84c535dbe3d73af1`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x96EA	163 bytes
`embedded_file_obj0002.bin` `d47e774f9657cf89f66fd6677716a0e8dad701c96d76b10f3829ea9afd421878`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x97DB	2006 bytes
`embedded_file_obj0003.bin` `520b467f581eafbd182e238c648c31f679d6a873b2e6a11be369fa2861ef3589`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0x9B49	181837 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0004.bin` `7e4c746142c5363dfb2147564dc0d7fabf1236273c9a924813bf104d26134ae9`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x1124A	2436 bytes
`embedded_file_obj0005.bin` `cdd56f69a619284d1d00cccc1f44f45786ee9ac0806b8e0beaf458747fe0c5e4`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x11547	357 bytes
`embedded_file_obj0006.bin` `500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x11660	200 bytes
`embedded_file_obj0007.bin` `9d935e95807c4a1878faf4b42599d869828a6e161658c23b6db369f82ff29295`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x11754	1533 bytes
`embedded_file_obj0008.bin` `2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x11A16	80 bytes
`embedded_file_obj0009.bin` `4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x11ABF	56 bytes
`stream_002_off000004cc.js` `f8721569904600df33f536ddc9f4942717077f9d6c3c4253a8f4de5650fc6531`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CC	1367 bytes
`stream_003_off000006b3.js` `91ea259764c68d27b8981a339c02d8ea92224ae5c0d0cd0a7c8f3d645d599090`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x6B3	902 bytes
`objstm_0115_00.bin` `b52e3bd02d08fa99dfe2a7754213221df7d8e521fd07f72e7a0b920d6a839174`	pdf-objstm-decoded	PDF /ObjStm 115 0 obj (inflated)	7417 bytes
`font_00_sfnt_off00011bc4.bin` `c29e5b1537bee8c88b3ffca56c5f24a45ec8da374cf9d4c0b4a78d04fc230949`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BC4	95975 bytes

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