Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fb5ea06e68d676…

MALICIOUS

PDF

36.7 KB Created: 2021-05-23 05:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8230e965883177597e18e6aa3f54fd23 SHA-1: 7e4e2e37a15d2d9170bcfc0aaad673503985f5a9 SHA-256: 44fb5ea06e68d676d1ddfc727a825def8d74598a5697cd25115c405499d8ff4d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic PDF_GAME_HACK_REDIRECT_LURE confirms this behavior, indicating a phishing or social engineering attempt to trick users into visiting malicious sites. The ML classifier also flagged the document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-login-free-game-hack In PDF document text
    • https://javisintlmedia.com/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003566.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3566 25424 bytes
SHA-256: 1e613877aec387387958c9d1ec96531b8fb157d5ff6b3353fa8bbcc6fdff440b
font_01_sfnt_off00006f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 17996 bytes
SHA-256: a07e2ad8fd79bb30e6fc1ebe6b3b8a9b32aa8410594bf0891ac0147b7718a067

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