Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a067608332e1aa9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 15:50:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d27e67df4486f3464821dde7f9cf543 SHA-1: a5af5ac95dfe67e30736036c7d8a72ff4a966151 SHA-256: 6a067608332e1aa9415f4c75d316fab4c26591a92e8f20566f269567f63c5b58
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to known malicious infrastructure, specifically promoting a 'Coin Master Hack'. The document body and heuristics indicate a lure for game-related cheats, which is a common social engineering tactic to trick users into visiting malicious sites. The primary URL identified is http://netcdn.tw/app/406889139/coin-master-hack-activegamer-game-hack, which is flagged as a malicious redirector.

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/coin-master-hack-activegamer-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-accounts-to-use_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-lice_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-unlimited-robux-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-make-a-free-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/speed-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-trainer-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-cheating-text-scripts_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/comandos-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-pins-for-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheats-roblox-highschool_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-gift-card-codes-2021-giveaway_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
font_00_sfnt_off000031d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D8 23052 bytes
SHA-256: 395cc1fad2b682e167432335016f00b2882d0fa8a9f9bef964a8bdb485c05573
font_01_sfnt_off00006548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 18376 bytes
SHA-256: 9071112516a3c1a751db78ff2cf185d6a5c8a1d73babf85370e027775254c109

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