Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b86a99fb99db710…

MALICIOUS

PDF

47.9 KB Created: 2021-06-01 11:01:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e5e01b6fef5809c8d9a9fef5bcceb24f SHA-1: aa3db2f50102672d4b116c0d71d688e0754bc887 SHA-256: 6b86a99fb99db71057e8e6a1054f8a547fbd63ac94f98d74e2be814f4b7772b8
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and cheats, impersonating the Amazon brand to trick users into clicking a link. The primary link directs to a malicious domain, likely serving as a downloader or redirector for further malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in game cheats to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • 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/roblox-ghost-hack-cheat-engine-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/roblox-ghost-hack-cheat-engine-game-hack PDF link annotation
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/roblox-booga-booga-fly-hack-may-26-2021-mojo_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/hack-to-get-money-on-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-robux-gift-card-codes-2021-generator_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/troll-roblox-avatars-free_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/how-to-hack-on-roblox-murder_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-adidas-pants-roblox_GM431946152.pdfIn PDF document text
    • https://caotangmen.org/wp-content/uploads/sites/17/fsqm-files/free-builders-club-roblox-2021_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_off0000552c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x552C 24228 bytes
SHA-256: fd185bfa1a986dca74eaa5631f95c233264666cd07a16da254e203e260ab5b8a
font_01_sfnt_off00008caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAF 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 18860 bytes
SHA-256: 637238b6e83bb2eb30d40e00fb986d5b8e92dd8e1ec2e06e684344c29d0aeb48

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