Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe025fc5f92999a…

MALICIOUS

PDF

32.4 KB Created: 2021-07-01 12:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b380b0583b1204cd05edf0cbf2636b00 SHA-1: 0826f1400d7433ebd98c5d52b75b030a5beefa2b SHA-256: dfe025fc5f92999a4d69688d0e1bebe11aa9a0e9466c421be78f8cc5aff9e2c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The primary lure, 'How To Hack Other Roblox Account', points to a known malicious redirector. This suggests a social engineering attack aimed at tricking users into visiting potentially harmful sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/how-to-hack-other-roblox-account-game-hack In PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-ben-10-cheat-codes_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-hack-v1-2-download_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/claim-free-robux-no-human-verification-1-billion_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-do-you-get-hacking-station-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-green-bird-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-hack-no-human-verification-or-survey_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
font_00_sfnt_off00002adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADB 21312 bytes
SHA-256: 84835e66ae5d05230a7bbc65e9296ddbed4ebb719ed68cf0c776df09b7826a74
font_01_sfnt_off00005915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5915 19232 bytes
SHA-256: bc729e0e1e24646b2f2b8b9636523b926d2da2b47d2c462846d28b2d035ae1d8

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