Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abc0bd0fd70c440…

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 11:02:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 827faf0865db60f8d16f5c48502bb6c1 SHA-1: 2368c8e19a7b296adceda1be5f963e0e95e847c7 SHA-256: 7abc0bd0fd70c440177a463923d04a74c1638bcc5ef924663b7107628ef4130a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free Robux' and 'game hacks' to lure victims. The document body, though partially corrupted, contains a URL that aligns with the heuristic findings. The presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/robux-free-robux-game-hack In PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7A 25784 bytes
SHA-256: 6184952d347a52c247ce8b636d929857f3cd68a3e72483cbd39645f766b1cc79
font_01_sfnt_off0000868b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000939d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939D 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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