Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e122ce53ae7cd4…

MALICIOUS

PDF

44.7 KB Created: 2021-06-10 20:52:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f8b77e2112385e683b805cc31b6299a6 SHA-1: 94b9992a7192be4bd6bc5f7a48f5b7b750b22df1 SHA-256: e9e122ce53ae7cd44c038f75bf891a1469c25f5b54221ee1d2163babbf7a9e4d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings confirm these links lead to known malicious redirectors and a lure for free game items. The document body, though partially obfuscated, also contains URLs pointing to similar content, reinforcing the phishing and redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/hack-de-roblox-counter-blox-game-hack In PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-cards-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/earn-free-points-for-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/easy-free-roblox-today_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/box-land-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/no-click-cheats-for-roblox-jialbreak_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/getrobux-info_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/hack-roblox-2021-script_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/play-minecraft-online-free_GM479516143.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_004_off00005038.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5038 25668 bytes
SHA-256: 624827e3c074a7ffd6458126797081e095a85f0cca5e8b3ece131ac331cf2a91
font_01_sfnt_off00008b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B25 18592 bytes
SHA-256: 12720a01acc1c84a0e5d625648d5b7b44e3c42e333f4419478b520e4cf8e4d97

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