Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0d40c812c995dd…

MALICIOUS

PDF

104.2 KB Created: 2022-07-08 05:25:27 +00:00 Authoring application: uhilullo (via PDF Master 1.0.1) First seen: 2026-05-04
MD5: ece5c47b1fc4321130d16dba96b5e04c SHA-1: c9776a0ea42a304d23e0e52982aa593f5fac4d3a SHA-256: fb0d40c812c995dd9910c1180fa80ca7fe18fdadc8c532fa82093c9fa0d85c66
129 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0003

Heuristics 5

  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://hardlyfind.com/rumpshaker/elinor/S2hhdHRhIE1lZXRoYSBNb3ZpZSBEb3dubG9hZCBIZCBNcDQgMTAwS2h.harvesting?ZG93bmxvYWR8aVQ5WjNvNVpYeDhNVFkxTnpFNE5qazFOWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA=blatant= PDF link annotation
    • http://hardlyfind.com/rumpshaker/elinor/s2hhdhrhie1lzxroysbnb3zpzsbeb3dubg9hzcbizcbncdqgmtaws2h.harvesting?zg93bmxvywr8avq5wjnvnvpyedhnvfkxtnpfne5qazfowhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda=blatant=In PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC27 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off00009413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9413 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261