Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1f585cab53ebd8…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 13:56:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 103e4136c41e998463e806f69cf0a849 SHA-1: 0998fc09064a0fe89b552c7c7e57a9783c2a8484 SHA-256: ec1f585cab53ebd82c0f6011ab4ef6f1e221919b9f54b4a150c8019078bf55a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free currency' lures. The primary link, https://netcdn.xyz/app/431946152/how-to-get-free-roebucks-in-roblox-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these malicious sites, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/how-to-get-free-roebucks-in-roblox-game-hack In PDF document text
    • http://adravietnam.org/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.adravietnam.org/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://www.adravietnam.org/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://www.adravietnam.org/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.adravietnam.org/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.adravietnam.org/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://www.adravietnam.org/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://adravietnam.org/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://adravietnam.org/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://adravietnam.org/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://adravietnam.org/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.adravietnam.org/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://www.adravietnam.org/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://www.adravietnam.org/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.adravietnam.org/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_003_off000049bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BD 25656 bytes
SHA-256: 3183ed870a806b9eeeaa94a92bb4cad1ca033729458158d7b348b72c77df0ba0
font_01_sfnt_off00008585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 18524 bytes
SHA-256: 6a418ba74ae5328d563bd5a35238a9b9c08fdc9000a9cbda284a157467e29bc0

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