Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84bfcab8c7371f3…

MALICIOUS

PDF

36.3 KB Created: 2021-07-04 20:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c78fac9517203a698d6605809c7d6f2b SHA-1: 3dff67b8442721cf57fd29283e52c8e2fd7ae976 SHA-256: c84bfcab8c7371f342d48424cac7f3ccf7f6bf5b188c61c2db359493087b0733
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/406889139/50-free-spins-coin-master-links-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/claim-free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-ad-youtube_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-hackear-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-mobile-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-10_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-online-hacker-tool_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-find-hacked-roblox-booga-booga-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-for-roblox-2021-genorat-no-human-verification_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_off000035f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F4 23240 bytes
SHA-256: 89a4f6028bdbd11241c9807a7db48379899b37619f4a3fd3d47d1b5849b4c5f8
font_01_sfnt_off00006a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 18648 bytes
SHA-256: 7cb7b4aa4fe43c538a35ca12efa1607bb190a4a0226e989e68a2df4e99bf3741

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