Malicious PDF — malware analysis report

Static analysis result for SHA-256 6887570c8978f9a5…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 01:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e2c339095f3f5d6e3b4b30546822f62 SHA-1: 1d43d6dcb9006b2e11f7759bcfa547dcc8b73b9d SHA-256: 6887570c8978f9a531e84cb551c9b2e3839d0171a0505293c139c232eba4822f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" and "free spins". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-daily-spins-2021-game-hack, which is associated with redirector infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these malicious sites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/coin-master-free-daily-spins-2021-game-hack In PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/woman-roblox_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.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_off00004beb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEB 24968 bytes
SHA-256: 9816a0e6c1810aff52130077556269c68394e0a3306ee22b7c3002465ef9595a
font_01_sfnt_off00008511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8511 19784 bytes
SHA-256: 87e82aef4cbb88e1997dceadee6d5a455f5ba11579cbcfd2c4755aaf18ba0207

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