Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d06bc4add32f42…

MALICIOUS

PDF

36.5 KB Created: 2021-05-24 02:06:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c53329e3783296b9a07f1275c965ed7f SHA-1: 9fd38d4915d6e7aa99f669e36e30c416db99247d SHA-256: 62d06bc4add32f422024601fa17df77e634e103d6bd4fc706784a2cabde0cf50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a malicious domain, masquerading as a 'free generator' or 'game hack'. The document body and embedded links suggest a lure to trick users into downloading further malicious content, likely a second-stage payload. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/835599320/free-tiktok-likes-no-survey-game-hack In PDF document text
    • http://www.bzconstructionservices.com/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/how-to-get-free-gamepasses-on-roblox_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_off000030d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D3 27584 bytes
SHA-256: 3f5144869d25128991af1ce6028803e83ffc09aad3fd67a101c201900b5f3342
font_01_sfnt_off00006e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 17892 bytes
SHA-256: 070bbf181fa5f5f9f6e7cc39461a8fafc014c6f37f15ae67e02d5fc4d998fce6

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