Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69486a8fc64106d…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 14:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 32e9ba6db5c11700b1baf8c4827c3b3b SHA-1: 7b9059285047692bc508ef8e4795bdba4ba1b0fd SHA-256: a69486a8fc64106ddb7d16b2be9540ef34157da4acb19b6cba844252fa207574
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 https://netcdn.online/app/479516143/how-to-get-minecraft-coins-for-free-game-hack PDF link annotation
    • http://lib.unar.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/whats-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/robux-app_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.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_off00005016.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5016 25120 bytes
SHA-256: 741f2bd535f5a18feca7a2b48ada41b5f2d97b23412bc2b96a9e33469dd2cd82
font_01_sfnt_off0000884f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884F 17872 bytes
SHA-256: 0037a1fc045e764a0a06593ed58f76bf502c93e6708a03a1db6b693a2071c675

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