Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bfcbd1b3aa0e97…

MALICIOUS

PDF

43.4 KB Created: 2021-05-12 16:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a40ab0e2351d4ab1836da1654d7aab0e SHA-1: 09981d5ca124af66906487c565db502b3607c6cc SHA-256: 92bfcbd1b3aa0e979ec50b2f50ca787c497336b5605bf9862fcc48225ef094ef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a known malicious domain, masquerading as game hacks or free generators. The heuristic firings indicate a malicious redirector and a lure for game hacks. Although no scripts were extracted, the embedded links and the nature of the lure strongly suggest a phishing or scam attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/robux-download-game-hack In PDF document text
    • http://lib.unar.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/legitimate-coin-master-free-spins-apk_GM406889139.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
font_00_sfnt_off00004a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A16 26292 bytes
SHA-256: cc0c413efc8ea826699ef26a794a9e53283668d3d16b600892526f5ef8209758
font_01_sfnt_off000085d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D2 18656 bytes
SHA-256: 643f530bc401710360b2f74e2e590a7f6ab15445ebda3165faa7e078ea1fa698

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