Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce476a318d49c7a…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 22:51:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d1a59b2f830e094c95c7579795813950 SHA-1: a4c84100f741031b20811b45c1b654c951d2ad67 SHA-256: 4ce476a318d49c7ac2e76cc1fc3ccabd28806a4a5d23354f541f068d80f735ae
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 0.9769

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 https://netcdn.online/app/406889139/how-to-hack-coin-master-ios-jailbreak-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-come_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pubg-uc-qiymtlri_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005284.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5284 24684 bytes
SHA-256: cfa5a6c593a5357f424c18c5a30b7d8f1b694b286e3715d9d5443c691f743472
font_01_sfnt_off00008a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7A 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000942d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x942D 18280 bytes
SHA-256: 696217ece26025caf6b49e3e2a1a7998402a438fab3f8ae4039d829799c9dc6e

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