Malicious PDF — malware analysis report

Static analysis result for SHA-256 e871aef428d5b7b9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 11:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d28dfa015f9b06cf33c127d6ab27d3da SHA-1: 69acb3add83619a7364b93f3903f2125519ba359 SHA-256: e871aef428d5b7b949c2f6bed05e5306fb3a4704245435f8f2d5feb174c6c568
82 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a website offering game hacks, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the embedded URL points to a known malicious domain. No scripts were extracted, but the document's structure and content suggest it's designed to trick users into visiting a potentially harmful site.

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/431946152/robux-without-verification-game-hack PDF link annotation
    • https://itamleek.net/uploaded_files/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-hack-into-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-hack-roblox-account-2021-new-method_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/cheat-engine-bypass-roblox-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-christmas-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-get-free-items-and-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/cone-master_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-roblox-accounts-that-work-100_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-roblox-pin-codes-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/roblox-rc7-apocalypse-rising-hack-scripts_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/black-free-tshirt-template-roblox_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_off00002fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDD 22796 bytes
SHA-256: 2c76fa77833c67c3a699e642ffb8a57feb49043852d6170d9a85b4c71771fb29
font_01_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 19276 bytes
SHA-256: 4a2d2f668e89c70dfb6e16bd6998a43472677e1b3c1a09af93738297e9a51636

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