Malicious PDF — malware analysis report

Static analysis result for SHA-256 147446c6c9372feb…

MALICIOUS

PDF

42.3 KB Created: 2021-06-03 07:03:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9dbca7f9ebc7743ecb357b4113c62951 SHA-1: 9dd77de2fd6cff3430a74b1a5d5dea7be4ff4945 SHA-256: 147446c6c9372feb0677593983b2946e12613ceafb33271befb995bf7183c120
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious domain, masquerading as a game hack generator. This lure is designed to trick users into visiting a site that likely hosts further malicious content or exploits. The presence of multiple embedded URLs and a critical heuristic firing for malicious redirector links strongly indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/1330123889/pubg-uc-murah-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-girl_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_004_off00004ab8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB8 25252 bytes
SHA-256: 76d0ca561be216f946a326e9d1db9417d934ce4115bd47f5da69602bd82cc563
font_01_sfnt_off00008233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 18488 bytes
SHA-256: 48068724849f00872e9f93b91db19732a052bd2de215f2e00373c34f4c3f94df

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