Malicious PDF — malware analysis report

Static analysis result for SHA-256 0915da8381b324ab…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 01:36:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 805696c0b4f0d7588588adfab69217b0 SHA-1: e7e34962a8d4d47792851a7105f7f6ecd3b42fc8 SHA-256: 0915da8381b324ab19458d93bea085613b11e562bd278e24f346ade3193808f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The heuristic PDF_GAME_HACK_REDIRECT_LURE specifically identifies this lure. While no scripts were extracted, the embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading or executing a second-stage payload, likely exploiting a PDF vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://netcdn.xyz/app/479516143/minecraft-education-free-game-hack In PDF document text
    • http://yardfon.go.th/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://yardfon.go.th/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A0 24668 bytes
SHA-256: b77f6edd58e8cb39b9f821a86044f8d27c9cc393e151019c40aa31ace11bf05d
font_01_sfnt_off00006cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 18024 bytes
SHA-256: 50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed

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