Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc7901229e6d19d…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 10:13:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d649dd1c47cfc7af9d88c4c1366a40e5 SHA-1: 083f5fe780fae3139649068bfe8c359780c2d1c2 SHA-256: 0cc7901229e6d19d514b1e607917fb3a668537081835af0000af7fc0aeec40b1
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures for popular games. The primary link, http://netcdn.tw/app/406889139/how-do-i-get-free-spins-in-coin-master-game-hack, is flagged as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely leading to further malware downloads or credential harvesting.

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-do-i-get-free-spins-in-coin-master-game-hack In PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-online_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-cheat-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/guuudd-info-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/robux-miner_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_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_002_off00003277.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3277 22464 bytes
SHA-256: 9e9a2d270fb73fcb82d297ad78fbd5116957a0068e95b4494e34e0646f712e34
font_01_sfnt_off00006490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6490 18508 bytes
SHA-256: 5fa4adbbb2c865a19aa6c2d7661c2270d24b48d73078d2e2d8c4fb61005cd4a1

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