Malicious PDF — malware analysis report

Static analysis result for SHA-256 2734db0e70f5a3c9…

MALICIOUS

PDF

47.8 KB Created: 2021-05-11 15:01:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af7622880972595b4d557b6d38f4d621 SHA-1: 83e97254b8c55d2666e73eee096ad931e166a16a SHA-256: 2734db0e70f5a3c9d217620f7f79618908496b67c3f78c4026f427fa69359f52
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' to lure users. The primary malicious link identified is https://netcdn.xyz/app/431946152/inappropriate-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/inappropriate-roblox-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/login-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.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_off00004bc3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC3 27196 bytes
SHA-256: 974f33e433650ce34f18c20c410c75af8d9ed43b9964bff523440bbec649a53b
font_01_sfnt_off00008b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0F 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9821 18412 bytes
SHA-256: 9f3a6c149e2e02a3e3a6e6c60675a112b4ad605b0f15a5c3bf146a5a78a21490

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