PDF static analysis report

Static analysis result for SHA-256 8573c6867b68be7a…

SUSPICIOUS

PDF

45.5 KB Created: 2011-02-20 15:01:46 +08:00 Authoring application: VB Example Project (via DynaPDF 2.5.4.557) First seen: 2026-05-09
MD5: e010d7813dd8aa9bfff399b127cbc240 SHA-1: a90d508cd446ae79db512cbce371a213c36ec3f9 SHA-256: 8573c6867b68be7abac963291ebbae0080fb3cafad9597319ca5d0e24ec0a00d
28 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains JavaScript actions and embedded JS streams, indicating an attempt to interact with the user and potentially execute malicious code. The document body suggests a form designed to collect personal and financial details, which is a common phishing tactic. The embedded JavaScript, particularly in javascript_obj0013_006.js, discusses compatibility issues with Acrobat versions and date formatting, hinting at complex form manipulation, and the presence of external URIs like http://www.dynaforms.de further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2593

Heuristics 5

  • JavaScript action low 1 related finding 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.
  • 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
  • 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.dynaforms.de PDF link annotation
    • http://www.dynaforms.comIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#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://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0051_002.js pdf-javascript-stream PDF /JS object 51 at offset 0x2E45 42 bytes
SHA-256: 40af22c566b45f66fde72d79348c326b8e7933a50e8c3ad3de475195aac9dacb
Preview script
First 1,000 lines of the extracted script
AFNumber_Keystroke(0, 1, 1, 0, "", false);
javascript_obj0052_003.js pdf-javascript-stream PDF /JS object 52 at offset 0x2E98 39 bytes
SHA-256: ec2a2053e3b84f56547297825efbc1437665e1884725db8d77e914a1ce3cc9f7
Preview script
First 1,000 lines of the extracted script
AFNumber_Format(0, 1, 1, 0, "", false);
javascript_obj0055_004.js pdf-javascript-stream PDF /JS object 55 at offset 0x3024 33 bytes
SHA-256: c4287c5c3e37d48b98ace11b04930d19e8be4d405af6749d7e51f8d70a59029e
Preview script
First 1,000 lines of the extracted script
AFDate_KeystrokeEx("dd.mm.yyyy");
javascript_obj0013_006.js pdf-javascript-stream PDF /JS object 13 at offset 0x1339 848 bytes
SHA-256: c283f4df9532066c53aa61ef4366ef51c66f132fcf4a4ed8f013b138bfaae40a
Preview script
First 1,000 lines of the extracted script
if (app.viewerVersion >= 7.0 && app.viewerVersion < 8.0)
{
app.alert("Due to bugs in Acrobat 7.0 character spacing does not work in text fields. We use the flag ffComb instead which is supported since Acrobat 6.0. However, if the field's format is controled by a JavaScript Action, we cannot set the flag because Acrobat 6.0 is then unable to display the field's text. Acrobat 7.0 has problems to place the the cursor in such fields but the final format will be correctly applied. The problem is that if the form should work with Acrobat 6.0 we cannot set the flag ffComb to the date fields. It is also impossible to get the same result as with character spacing with the flag ffComb. So, what can we do to make the form compatible to all Acrobat versions? I really don't know! The easiest way would be to avoid the usage of such date formats.");
}
font_00_cff_off00005d27.bin pdf-font-stream PDF embedded font (cff) at offset 0x5D27 3974 bytes
SHA-256: 0f5deff91dca4954b35764f1dac038cc25ae635486f1a18bb7d929c421267379
font_01_cff_off00006fc7.bin pdf-font-stream PDF embedded font (cff) at offset 0x6FC7 4663 bytes
SHA-256: a96fa48c806b6d1a90943115eabfe094cc214f3639b2341007f2afa56f960149
font_02_cff_off000083cc.bin pdf-font-stream PDF embedded font (cff) at offset 0x83CC 2511 bytes
SHA-256: aa4f975e3be68fa52f135fa7b04e28db05c8ba88c406d8feec6ab2f755e8a70a

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