Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf9072f6a0bb886…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 07:54:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f14f5e29be6deaa034bd77ee9539e6ce SHA-1: c83df4503c47ad3168996828864c035782c8f02b SHA-256: abf9072f6a0bb8865712e3a9d35c159fbef77a03105cf8ad3d34c72491517b0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and cheats. The primary lure URL is https://netcdn.online/app/406889139/free-coin-master-androd-cheats-2021-game-hack, which is flagged as a known malicious redirector. The document's structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting compromised sites.

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.online/app/406889139/free-coin-master-androd-cheats-2021-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/rbx-com_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_004_off00004c18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C18 24860 bytes
SHA-256: 545aba2c80885873bada4cdb8c1b63a94e38e436d01434effbed0212afcf92e5
font_01_sfnt_off00008585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 18452 bytes
SHA-256: 61e5d8ad188eb015ddf9a5df69a65c9352fe70e06cc8ab935c42147f18f81b24

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