PDF malware analysis — malicious · 256767eb8d1aaf07

MALICIOUS

PDF

752.6 KB Created: 2009-03-25 15:33:07 -04:00 Authoring application: Adobe Acrobat 8.0 Combine Files (via Adobe Acrobat 8.0)

MD5: 532e40ba7d94c4b7a6f3ade31fbcda81 SHA-1: b6e2a31feb9e429172c49e34631c4c332cbfc3e0 SHA-256: 256767eb8d1aaf07480d817ee0103cbebbdd93a03ccd90159a05f94a0bd38113

164 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript and embedded files, with one embedded PDF child exhibiting suspicious static findings. A high-severity heuristic indicates a 'Browser extension / update installation lure,' suggesting social engineering to prompt the user to install a plugin or update. This is a common tactic for credential theft or malware delivery. No scripts were directly extracted or deobfuscated to provide further detail on payload execution.

Heuristics 11

Embedded PDF child has suspicious static findings critical PDF_EMBEDDED_CHILD_STATIC_TRIAGE

PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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.
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.
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.
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
External URI info PDF_URI

PDF contains an external URL action
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.pmi.org/PDF/OPM3Handbook.pdf)/S/URI
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 21

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0007.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x10402	85 bytes
`embedded_file_obj0008.bin` `8313b0b6cf4ccf8d8f4d08d8239c0eecc8b346f8d0a2ac3b941d0e3fce5023b7`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x104B5	3255 bytes
`embedded_file_obj0009.bin` `f0c163576d8710e5ef80b0ed22cbd2bb17662f5c9fb5d862a63ed35b74c4ddc0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x10966	25389 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 long base64-like blob(s).
`embedded_file_obj0010.bin` `7e915b5dd2e321929666a7b64c038b67678092d6e43a4a70683521856a4d5128`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x11D04	214 bytes
`embedded_file_obj0011.bin` `2d58413fda1ff20c994606823bf49e41194612c0137b6315e50fa7bdc01f1e09`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x11DFF	2423 bytes
`embedded_file_obj0012.bin` `4707b0863d526baff0d4c0e4c941064d095f409fb10cf33dc743c077abdc678b`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x120E1	2087 bytes
`embedded_file_obj0013.bin` `b9892eb3317eb6d9f6cdb9a91aa82288daec7e6f91a41505b1799a8d10285cbe`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x1223F	799 bytes
`embedded_file_obj0014.bin` `b1b296d371e691ae903fc90e2f3bd69eeac3730137d7c7f5d9379aed02cb51d6`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x1244D	110 bytes
`javascript_obj0149_000.js` `04ceb4c2218e7db19a6e007ca4ce846f92c17fff5eaf3a611e71bbd7a5726917`	pdf-javascript-stream	PDF /JS object 149 at offset 0xBF9	1535 bytes
`javascript_obj0150_001.js` `4a1aca004cf20431c9a66dce85404a6411a54d881a6c257882260ffc972a13eb`	pdf-javascript-stream	PDF /JS object 150 at offset 0xDE5	870 bytes
`javascript_obj0151_002.js` `922f7942d25f53e6e6eedc1b3a95c47a757faab3be4838fa02db0dbea2c4dbcc`	pdf-javascript-stream	PDF /JS object 151 at offset 0xF40	2798 bytes
`font_00_cff_off0000ef3f.bin` `a9c85193681ee48fca472bff404852ba0a28d64c103b8dbc31ed7cbf01f3712c`	pdf-font-stream	PDF embedded font (cff) at offset 0xEF3F	2402 bytes
`font_01_cff_off0000fac1.bin` `9de92a37c091d12910ec4a37a3ea8eb990d50fd05fc0d8e1720ea93e28f8e0e3`	pdf-font-stream	PDF embedded font (cff) at offset 0xFAC1	858 bytes
`2._Contact_Information.pdf` `560244dc21b03aa9de39cdc7074b877578fe82a825cd2360e67e3dc49195e11d`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0x112D5	83366 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 long base64-like blob(s).
`3._Education_and_PM_Experience.pdf` `af2271596ba07e2c831145234eb9d2d48a743e74e920c6c31a126bc503c875ca`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x1F959	54232 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`4._Assessing_and_Consulting_Experience.pdf` `d82584ddbf849d8c63f7fb7c926b82210b3165bb88dffeb9c789a85dc8213b98`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x385DF	52042 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`5._OPM3_Knowledge_and_Experience.pdf` `4dd7414ed83bbb7e23019ed86b8c72f54ccdcc22859c4d2fcbd2abe765339fd8`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x50B44	111832 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`7._Fax_Covers_Sheet.pdf` `bd67ce011c52a3d0b799ce7ce8fc2c073205ce761423bf09b82770212f88174d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x8CEC1	72592 bytes
`javascript_obj0038_000.js` `736c69993d4cd953676f5971bd943955c344f3001c77f281afd5d8df5a456b51`	pdf-javascript-stream	PDF /JS object 38 at offset 0x6AD	1379 bytes
`stream_015_off00068c7c.bin` `44a75febaaaaa07ba399ce381361ead12c453742b144277fc335d0c0e293648b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x68C7C	64259 bytes
`icc_00_off00002144.icc` `2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e`	pdf-icc-profile	PDF ICC profile at offset 0x2144	3144 bytes

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