Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72a0b4853274548…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 01:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 254a7948659442aab5b24d7040cb82f6 SHA-1: ed2ca18e5d7f7178fc785b3fa293a77be7887efb SHA-256: c72a0b485327454802faeb642e3e118ed7770e360a8c90d5f2c1fd289fc11468
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on "free generator" or "game hack" content. One of these links, https://netcdn.xyz/app/406889139/game-hunters-coin-master-game-hack, is identified as a known malicious redirector. The document body and embedded URLs suggest a social engineering pretext related to in-game currency or hacks, aiming to drive traffic to potentially malicious sites.

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/game-hunters-coin-master-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/legit-free-spins-coin-master_GM406889139.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_off00004bce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCE 24500 bytes
SHA-256: 1d0ee9a41b6f7acfc1bdda929c202f7e8b32c9a8b0621bd5dc1e7ee82dbdc657
font_01_sfnt_off0000831c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831C 17944 bytes
SHA-256: 00dcd97e74993abf534f5433ca519d6e7023ac06076bf7932408a344f37d0cba

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