Malicious PDF — malware analysis report

Static analysis result for SHA-256 968d2fbf3a23f5ad…

MALICIOUS

PDF

57.6 KB Created: 2021-06-13 15:12:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fab9a1efde6eb4dd6999eaba0ad72923 SHA-1: 5f2fa22f604bd824c618906ed19e5abb45e8957f SHA-256: 968d2fbf3a23f5ade2ab30adaad7d8deed5318c6caf57418bcf63aa05d882c5a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector, that promise free game hacks and currency. The document body and embedded URLs suggest a lure for potentially unwanted applications or further malicious downloads. The presence of embedded URLs and the nature of the lures strongly indicate a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9611

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/roblox-apk-hack-download-robux-game-hack In PDF document text
    • http://elibrary.fl.unud.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-hack-into-peoples-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/code-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/hack-theme-park-tycoon-2-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/ap-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/fastbucks-me-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-app-download-pc_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5331 29576 bytes
SHA-256: 7eaae9909c12be329d98fa1a4669d407ec895e9823501003caa3559780d7627d
font_01_sfnt_off000094d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D5 8252 bytes
SHA-256: 7ebedd6b182173c8e55836cb0d114b2c4a0ac85c96a51b9f0706c935f8415fea
font_02_sfnt_off0000afe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE4 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off0000bc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8C 19004 bytes
SHA-256: c0e90e38f0b6655d610b19cca68b7b80dccbfd2fc68368fe8d48144f92a52ff8

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