Malicious PDF — malware analysis report

Static analysis result for SHA-256 86dbb6b609cb9e9d…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 03:36:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8fb46df21ecc1336972b974397165175 SHA-1: cb521ed43d695db6c463c59b3aa77fe0dae641be SHA-256: 86dbb6b609cb9e9d5e2a96c8e88ae36fe6bee4f45913ea73e608d119208a5c28
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for free game currency or hacks, impersonating Facebook, and directs the user to a fake CAPTCHA or verification prompt. This is a common social engineering tactic to trick users into clicking malicious links or performing unwanted actions. The embedded URLs are the primary indicators of malicious intent, leading to potentially harmful content or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/orewards-com-free-robux-game-hack.
  • 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.xyz/app/431946152/orewards-com-free-robux-game-hack PDF link annotation
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/www-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/robux-generator-without-human-verification-2021_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_003_off000049a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A6 24736 bytes
SHA-256: de44058b2ce9259d3514befd7b4c9b45f7b9364f2659682c28e113d7ab94f9b8
font_01_sfnt_off000082ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EC 18840 bytes
SHA-256: db65450964d7be290e65cdc2a92251ec8b560453bbe28e14c4f3d4713211f4b7

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