Malicious PDF — malware analysis report

Static analysis result for SHA-256 3974f1107d25eae1…

MALICIOUS

PDF

45.4 KB Created: 2021-06-11 07:58:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f972d3db3cfe7328e2f95db9989096a SHA-1: 6c04d426291a0e03fd441181293183a2e6eb0b5f SHA-256: 3974f1107d25eae17cf0983c5475a013b3f35a39d89dbc1eb5de36a6909820a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to a known malicious URL. The document body, though heavily obfuscated, contains references to game hacks and the malicious URL. The presence of embedded URLs and the ML classifier's high confidence further support the malicious nature of this document, likely intended to lead users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/cheat-code-roblox-hunter-simulator-game-hack In PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/wurst-mc_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-script-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/master-coins-free_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_004_off000053a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53A6 24768 bytes
SHA-256: 782d1856695c32f77f9ef6c3b234a0dbf9f81fdbc3a303d0f0e4e447c04b4521
font_01_sfnt_off00008cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC7 18976 bytes
SHA-256: 035f57d5d1a22efba286a30770123974ab633cb8d4950eebc1aaa4297a30994f

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