Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee33bb3438ebd44…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 04:57:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 13a55e948b42fe3c315e25bc82f07f4a SHA-1: b266c82b5b3ad826835204839ab3955faff244e8 SHA-256: 6ee33bb3438ebd4433b4dacb1b0b183c69262c00a5dda5abd35ebc9f99078d45
160 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/cheat-in-rake-roblox-game-hack. The document body and heuristics suggest a lure for game hacks, likely intended to lead users to download further malware or engage in phishing. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a malicious intent, possibly involving exploitation or client-side execution.

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/cheat-in-rake-roblox-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-script-mad-city_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-for-roblox-case-clicker_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/to-hack-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-1-robux-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/bloxpink-free-robux_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_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22000 bytes
SHA-256: 0f9f98195322c441b611378ea6365c1f7ae855c718a276eb4407bfc1467d05f4
font_01_sfnt_off0000615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 18928 bytes
SHA-256: f1d706da47f09d57e009663524354bce2841ddb6363da4e89c17b01dbb211686

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