Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f579dc4a4cc3ff6…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 06:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e996210bb9c8eca030aa7f75c2c26640 SHA-1: c576647e651a7811423e3fa757a550d4aafc78ce SHA-256: 2f579dc4a4cc3ff61764f25df336412ae95eca87d594f651d1bb97871579fe02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'Free Robux Generator 2021 No Survey' and game hacks, directly linking to the URL http://netcdn.tw/app/431946152/free-robux-generator-2021-no-survey-game-hack. This URL is flagged as a high-risk redirector, indicating a likely attempt to deliver a malicious payload or conduct phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.tw/app/431946152/free-robux-generator-2021-no-survey-game-hack PDF link annotation
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/home-tycoon-2021-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/https-robloxcom-catalog-202120215-hackerhackerhackerhacker-rbxp-202120214_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-robux-hack-on-android_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/can-you-get-free-robux-on-cheat-enine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/roblox-play-free-online-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/how-to-hack-murder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1medan.sch.id/__statics/gudangsoal/files/minecraft-free-online-games_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
font_00_sfnt_off00003386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3386 22352 bytes
SHA-256: 4e64bd831161dba93b298b510bcbc03e4f12bead305cc4b7e05c61e26574bb39
font_01_sfnt_off000064e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 19516 bytes
SHA-256: 215bbe1509df05bb6592a2eb23184ac9fd1abeffda7f861746e5b701ad597e03

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