Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd610ed75f8fc2d…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 02:19:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9d90a6418924c82c373f83a13b1063f5 SHA-1: b1be6742a18f40da29db8b552483dac601bbb9cc SHA-256: fbd610ed75f8fc2d0ae2281c9c90614794cae2bf20fd0ff0ea4e1ed6255b4d2d
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/new-speed-hack-roblox-2021-feb-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/invisible-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hackear-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-card-generator_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-lvl-7_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/wearedevs-roblox-exploits-and-hacks--cheats_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-redeemable-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fre-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/easy-hacks-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-may-2021-no-suscribe_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/2021-roblox-free-accounts-facebook_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/como-hackear-tener-robux-gratis-con-bots_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-20212021_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
font_00_sfnt_off00003055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3055 22192 bytes
SHA-256: ffdb95b2723f150ae415f928b9d59ffbe621710346688451056eb3d59fc40f95
font_01_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 19736 bytes
SHA-256: 4603a3a1f2e8395a8d2fd38651091d8e687b0982397f596ec91209484e78e0c9

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