Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fcfa556331b453…

MALICIOUS

PDF

569.0 KB Created: 2010-12-21 10:02:16 -06:00 Authoring application: Adobe InDesign CS4 (6.0.5) (via Adobe PDF Library 9.0)
MD5: 9cb3fc5cd0aeb9eaf4c64a8f4116e302 SHA-1: 42a9ac8fc641716ac25db10305ca0b1b61b82763 SHA-256: 54fcfa556331b4533d596ebde334b5220c2d2a0e82ec75d8ed7d67b99cf6a41b
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple embedded JavaScript streams and XFA forms with executable scripts, triggered by an OpenAction. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to deceive users with a fake lottery or prize. The embedded scripts are likely responsible for executing the malicious payload, potentially downloading further stages or exploiting vulnerabilities. The presence of XFA forms and JavaScript points to a sophisticated delivery mechanism.

Heuristics 11

  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • OpenAction trigger high PDF_OPENACTION
    PDF has an /OpenAction — code runs automatically when opened
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
  • 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://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/illustrator/1.0/
    • http://ns.adobe.com/xap/1.0/t/pg/
    • http://ns.adobe.com/xap/1.0/sType/Dimensions#
    • http://ns.adobe.com/xap/1.0/g/
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://www.xfa.org/schema/xfa-locale-set/2.1/
    • http://ns.adobe.com/xtd/
    • http://ns.adobe.com/xmp/InDesign/private
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/sType/ManifestItem#
    • http://ns.adobe.com/xfdf/

Extracted artifacts 17

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0199.bin
1f1694652467f497b35beb6d0c79f2e06aa59e63066523be07dd94733a316db9		 pdf-embedded-file PDF EmbeddedFile object 199 at offset 0x8DF58 103 bytes
embedded_file_obj0200.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 200 at offset 0x8E01D 85 bytes
javascript_obj0097_000.js
f979542c4992f256c12537db5bbe5f86605da11ef877e634ccfc2c47c9284b10		 pdf-javascript-stream PDF /JS object 97 at offset 0xE62 1604 bytes
javascript_obj0098_001.js
3bf84668674e23c91aaaa6c58c24a1f80a30566e9cfbd09040882d18101fed76		 pdf-javascript-stream PDF /JS object 98 at offset 0x104A 902 bytes
javascript_obj0099_002.js
922f7942d25f53e6e6eedc1b3a95c47a757faab3be4838fa02db0dbea2c4dbcc		 pdf-javascript-stream PDF /JS object 99 at offset 0x11B4 2798 bytes
embedded_pdf_script_00075224.bin
b2a3a4da0527a3577f338cfeb0572019a3af841b2e249c2d2324e46d1e1e026b		 pdf-embedded-script PDF raw stream script payload at offset 0x75224 3104 bytes
icc_00_off00007e1f.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x7E1F 3144 bytes
font_00_cff_off000088a9.bin
e9aa7914d19c92c8ef0264915aa94ea5f4f3630ea456a2059bea7b5ef4a5a58d		 pdf-font-stream PDF embedded font (cff) at offset 0x88A9 7930 bytes
font_01_cff_off0000e3a1.bin
0b27a7a55d5d653d0b8643bc2cf19d4d8bf258a92ce2f8be2af7cb98b416f629		 pdf-font-stream PDF embedded font (cff) at offset 0xE3A1 4145 bytes
font_02_cff_off0000f2e1.bin
8a73591b1477806f8cd9bfb71bebbc19b22d669f2cb06cba9faaa2abcadf7858		 pdf-font-stream PDF embedded font (cff) at offset 0xF2E1 4798 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.45, consistent with packed or encrypted content.
font_03_cff_off00026193.bin
ba61a85c38571711e166245e2b90668751358c52ee81d9f1fdf8663ca91cc649		 pdf-font-stream PDF embedded font (cff) at offset 0x26193 2991 bytes
font_04_sfnt_off00027011.bin
578bc5aa5b9eb15c9002816f11cf25c0f591de57246a93143c0e2480a4b4801a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27011 11036 bytes
font_05_sfnt_off00048f08.bin
521a2fa2f96e7eaa1846d555b7f500ae323d8f9f26a19712cf33def57627e00d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F08 19977 bytes
font_06_cff_off0004cae8.bin
f9c4fb10abf90d671df200771c4f187f23f456d909c5ddef03298e95e5935dc0		 pdf-font-stream PDF embedded font (cff) at offset 0x4CAE8 869 bytes
font_07_cff_off0004d157.bin
4db1eeed5e313c540c40f0c7c223f17313aea6f98aaa00e2da784c372893fd9a		 pdf-font-stream PDF embedded font (cff) at offset 0x4D157 1210 bytes
font_08_cff_off0004d910.bin
87e35b1e87ce61ece65e7c7d30789d0a2c48877c917c3f80b127a3508602968c		 pdf-font-stream PDF embedded font (cff) at offset 0x4D910 1674 bytes
font_09_cff_off0004e296.bin
541979015443e1834ccbb41155fd87bc896e2260a0b5d440b5b9e82eff5e2d43		 pdf-font-stream PDF embedded font (cff) at offset 0x4E296 403 bytes

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