Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1ce214a7fddd9b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 02:29:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: edd31a54aeda1218ce9036057fe78096 SHA-1: 53aff8ad86ac10fbbdadc06d8e97d66a59faa38a SHA-256: 3d1ce214a7fddd9bf8f58aaec5b5c95fd725a3dcde19b7cbff58c97bce053568
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that lead to a known malicious redirector, specifically advertising 'robux hacks'. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting malicious sites. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of this document being used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-hack-revealed-game-hack In PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/how-to-hack-using-insert-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/hacks-for-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/hack-de-allah-akabar-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/how-to-get-free-tokens-asssassin-roblox_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/roblox-a-free-model-makes-me-teleport-to-another-game_GM431946152.pdfIn PDF document text
    • https://www.acorn-medical.com/uploaded_files/userfiles/files/free-admin-codes-2021-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 22096 bytes
SHA-256: 3e78d71aa2dc3524d6fccd7b62b9456e13e9edf9a336b51ff618ba072bd04a2b
font_01_sfnt_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 19084 bytes
SHA-256: c46ee069d285231003e104262bea08c1be43ffa62e02363ee878f5f9543b8ed6

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