Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b337d3054a6dea…

MALICIOUS

PDF

46.3 KB Created: 2021-05-17 11:20:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b161f9afbce203d35953b41589802e5 SHA-1: b59237af387d5d9f679eb2a581a82579d99e3482 SHA-256: 34b337d3054a6deab84b4503cdc95b584532f0748c114c858d05fb11de423c48
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically targeting users interested in game hacks and free in-game currency. The document body and embedded URLs strongly suggest a lure for users to click through to potentially malicious sites. No scripts were extracted, but the presence of numerous malicious links indicates a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/431946152/rbx-roblox-robux-game-hack In PDF document text
    • http://rivas-treuhand.ch/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/rbx-sites_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/games-for-robux_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a34.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A34 28524 bytes
SHA-256: 964ad48fa285192dc41073b6abcf9dece81ebd841dc9cc8cd69c4bf45130cd3c
font_01_sfnt_off000089c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9372 17924 bytes
SHA-256: 2d5b52d46d5f5936db7d507b0dcc9b52d77188af9577799d90f8cd44a5cfa064

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