Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ba3e492b148b78…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 17:19:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c7b168fec8b392bcf34b95a4d58112be SHA-1: 6d41e6d6fd6f3736747deaeb6a95fcb2254de7a6 SHA-256: a8ba3e492b148b7822c3f96e11375cd119351e177212bed045087dd6108cc615
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external URLs, including a known malicious redirector, disguised as game hacks or generators. The document body and heuristics indicate a lure to download a file, likely a second-stage payload. No scripts were extracted, but the presence of malicious redirector links and the lure strongly suggest a phishing or malware distribution attempt.

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/how-to-get-free-cards-for-coin-master-game-hack In PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/roblox-scam_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_003_off000049ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49ED 24648 bytes
SHA-256: b571b884891f89371c85cfef4bd2c1feb14d35678c3130ba011db2eeb53df26f
font_01_sfnt_off00008138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8138 18048 bytes
SHA-256: c3f371278b7fe6873213599d15e2d537c4e536c02b9f7f2e86ee974651b3645e

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