Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba93a63b9cfcd08d…

MALICIOUS

PDF

48.9 KB Created: 2021-06-03 13:58:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 359d0d7657cdcbee8f8382d66cf2d540 SHA-1: 764a41cc64bcff58cf65934e7842f969980806fb SHA-256: ba93a63b9cfcd08ddb897f5827509204ffd29b21e5f734ae1e82fd5060b0ba64
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lures suggest an attempt to trick the user into downloading a second-stage payload or visiting a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/406889139/coin-master-tricks-game-hack In PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-youtube-tiktok-dance_GM835599320.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/master-coin-hack-game_GM406889139.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_004_off0000510f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x510F 30272 bytes
SHA-256: a5181a62d62154b554ebf86df0939cb4c2d6ce1be6850f92008bce1b342f11a6
font_01_sfnt_off0000945f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945F 2812 bytes
SHA-256: 869414959d7b492e0f799b560e1731e3ab498bd286c28e9f0d2ec33d9b6cf53d
font_02_sfnt_off00009dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFE 17716 bytes
SHA-256: 72c9dca3f555d15cf680f05a17c83eea5c84cf549c22ff1a640312a233055f15

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