Malicious PDF — malware analysis report

Static analysis result for SHA-256 7191e0626e47bc44…

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 07:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 34922c39590c8111467ec818c8beab9b SHA-1: f5c3a43aa64e58cfc4f485d7b1a7802c9864522d SHA-256: 7191e0626e47bc44ba3bb393e9b48f9629e01da08cca0efddcdfcf8093242130
142 Risk Score

Malware Insights

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

The PDF contains a high-risk lure for game hacks and recovery secrets, directing users to a suspicious URL. The document body and heuristics strongly indicate a phishing attempt disguised as a game cheat, designed to trick users into revealing sensitive information or downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.xyz/app/406889139/coin-master-cards-hack-2021-game-hack PDF link annotation
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/free-bobux_GM431946152.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_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_003_off00004ab1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB1 24484 bytes
SHA-256: 97168b1fe84b80ecf74852bf9642154fb34249eea37f9814735bffd7d8786e17
font_01_sfnt_off00008225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8225 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D03 18292 bytes
SHA-256: 56ed892f9c960ec28c91726eeb440a92294fcef820bc23b96874e10d7a9d3574

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