Malicious PDF — malware analysis report

Static analysis result for SHA-256 059cc4899428744a…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 07:09:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6fdf16f2d6a45770184f4ef2f18bc352 SHA-1: 619eded77b801530533a649774a56d63cb3c856f SHA-256: 059cc4899428744a2604eb2ea41fb788e06ac698dfc90cdf33c2b5167d19983d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular mobile games. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-coin-link-game-hack, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the lure. No scripts were extracted, but the embedded links are sufficient to classify this as a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-coin-link-game-hack In PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/village-coin_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/robux-money_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2kotabima.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_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
stream_003_off00004b82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B82 25556 bytes
SHA-256: 2c355597e1543a348af1f218be47c61870a13b828e89b419e72d8d246b66e0b2
font_01_sfnt_off000085d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D7 17716 bytes
SHA-256: 6b6be525affa70ffc107ac4c88dd9d04ef97920621a7989faf1a85e6391895c0

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