Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec58977760af338…

MALICIOUS

PDF

2.86 MB Created: õ¾Îç¶ ÛT”Ðwݕ¾±ÆƒÖ4¥I( Authoring application: ðàRœ³¢p‡"Œ(Î­Ê¸…Î;Øl?Ï~s«_ (via ðàRœ³¢i­ €­(ŠÒìû’“ß#»I!g)
MD5: 98eeb6245509e96cc820a67dc4bdd781 SHA-1: 6a0a9600593290bd4285deaea3ebbf273a7a1ba1 SHA-256: eec58977760af338b2c92ed19ffb67befcb96c7299f40a5a092069ea583c4174
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It is encrypted and contains JavaScript, suggesting an attempt to hide malicious content and bypass static analysis. The 'PDF_CCITT_CVE_2010_0188_RELATED' heuristic points to a potential exploit related to CCITTFaxDecode, further increasing the likelihood of malicious intent. The document's structure, with images but no text operators, is a common lure technique.

Heuristics 6

  • CCITTFaxDecode + active content — LibTIFF CVE-family indicator high CVE related PDF_CCITT_CVE_2010_0188_RELATED
    PDF uses /CCITTFaxDecode together with JavaScript, XFA, or RichMedia indicators. This matches the delivery pattern for Adobe Reader LibTIFF/CCITTFax parser exploit families, including CVE-2010-0188, but does not prove the exact malformed TIFF primitive.
  • Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • 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.
  • PDF paints image(s) but contains no text operators medium PDF_IMAGE_ONLY_LURE
    PDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • 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