Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b024fa336611ef…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 23:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c4c3a217aa021aa961d2d588341621bf SHA-1: a9891b053219395592858533502a795972ff88fa SHA-256: b1b024fa336611efb560d96bfa5eb1101857e1d4faab85dbff397167676cd57f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.online/app/406889139/free-spins-in-coin-master-2021-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/free-spins-in-coin-master-2021-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/pubg-600-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-coin-master-android-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_off00005205.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5205 25492 bytes
SHA-256: d6825eb1951d46e9d04df209f303940f5f5b43147268bca3f35fc98d6ed59a5d
font_01_sfnt_off00008c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7B 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000962d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x962D 18288 bytes
SHA-256: 875184ae642e109850636143811e44f85c5e94aa46544af5e3834b3aaa47422b

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