Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf3892d0c215d6e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 13:17:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 908bbf301d06f3b34b7351d8a936f1a8 SHA-1: 49ee6535e8b2adc6c6248acf59bcec3941d92955 SHA-256: ddf3892d0c215d6eb624cc706e2b8e6e1b127513296296398fa6ca73dde03994
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to external websites, with a primary URL pointing to a 'game hack' lure. This heuristic, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to a potentially harmful site. The document body and extracted URLs suggest a social engineering tactic to trick users into downloading or interacting with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/hack-roblox-lumber-tycoon-2-btools-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/roblox-shorts-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-hackear-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-exploit-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-account-generator-old-account_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-jailbreak-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-codes-reddit_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-printable-roblox-birthday-party-invites_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-step-by-step_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/csgo-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3263 22132 bytes
SHA-256: 9f1f9b7df1a2cbce1a460e1698efc6cadca185ec72e2d1d9a235b67505dc1f3d
font_01_sfnt_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 19464 bytes
SHA-256: 9276fd857bc08d3d5e0dd9c20bed9bfa2865d682eb01d7900c81011ab710cf69

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