Malicious PDF — malware analysis report

Static analysis result for SHA-256 275656af6dffc9a0…

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 07:43:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7527066f3f8f38ba1bcb44094968f2f3 SHA-1: 99b2193cee9f92c88f964aef51a8e0d47530f726 SHA-256: 275656af6dffc9a0a3ba73c394be5a3da128aad6f4edbb46d19355879f11a270
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 0.9796

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/coin-master-50-spin-link-game-hack PDF link annotation
    • http://pustaka.keperawatan.unand.ac.id/repository/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-master_GM431946152.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_off00004f98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F98 24996 bytes
SHA-256: a78cbfa69235afe124600bf9e753206b113d9f798a1628039f68a3f6ee30ecfa
font_01_sfnt_off00008995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8995 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off0000961c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961C 19524 bytes
SHA-256: 116796059d98c55226e1c35490ec2f19e758123c9a13f1182aa8d8f2cbfdfbdc

Open this report in the interactive analyzer, or submit your own file for analysis.