Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4e289c96e23254…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 11:54:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e2864ec9a30ddda54ee22a586aa648be SHA-1: eeb5336205c067c4a70a7382fc59d25db254836e SHA-256: df4e289c96e23254a04aa743aff7cbf1a54b4d4f72439d505cfaa9323fae7573
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.tw/app/406889139/how-do-you-get-free-pet-food-in-coin-master-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cheats-without-builders-club_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-a-free-roblox-group_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-robot-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-dantdm-shirt-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-code-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-without-generator_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-shavaka-roblox-id_GM431946152.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_002_off00002f93.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F93 22876 bytes
SHA-256: 75accedf4d40107e898b40edf6df1ad8fa7572ce39d2f9669dfe9eff2f24f889
font_01_sfnt_off00006317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6317 18960 bytes
SHA-256: 9e03b029e376b531d63ae140c0287df0ed08580784c9ca8a104e51c253472481

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