Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c67dc0dc76712a9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 22:53:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9993bf35db6d4746b4c097f5097f795 SHA-1: 0db28428199128f6912aa69ba05e6c14293ee5fb SHA-256: 0c67dc0dc76712a9c662a6551fd4db6b2319fa114e0ce59a7dc09d9605135fc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on game hack or generator lures. The primary malicious link is http://netcdn.tw/app/406889139/how-to-o-get-free-coin-master-spins-game-hack. This suggests the document is part of a phishing or scam campaign, likely intended to deliver further malware or lead users to fraudulent sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/how-to-o-get-free-coin-master-spins-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/cheat-engine-bypass-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/hack-notoriety-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/saber-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-site-no-survey_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/hack-robar-c-uentas-de-roblox-akaka_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/claimfree-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robuxian-free-robux-code-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-robux-hackercom_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-tell-if-roblox-hack-is-a-scam_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FE 23112 bytes
SHA-256: 5ae396d30f74cd101ae89a275f59267e9fdc88ac8513d24157486d2c2fd33e37
font_01_sfnt_off000066db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 18336 bytes
SHA-256: 88fb275224d01e2fb2ba19e8488dcc02f674101147b00fcd4e979f6cbde2f727

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