Malicious PDF — malware analysis report

Static analysis result for SHA-256 73dbf5da3b2f9cb2…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 00:46:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d7fd55f4876df2fd37a702c3976e514c SHA-1: 5651ae2b4f93800b68e4af932d9dc0fecae2cf14 SHA-256: 73dbf5da3b2f9cb21c92c1d4085a3e093513af60ae049fde2beba92ea09d69fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9980

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.co/app/431946152/general-roblox-script-hack-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-use-cheat-engine-on-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generatoir_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-202100-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-hack-uc-20219_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-tiktok_GM835599320.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/mcpe-optifine_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_off0000314c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314C 22000 bytes
SHA-256: 250aef66d4edab43ae47e33053d2e116e232a6b97f36e3868cecad991645d208
font_01_sfnt_off0000619a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 19056 bytes
SHA-256: a80d805718b6b37b886d3926f127337852c6538178470bb85e4ddcbe24e11f23

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