Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f856c22a9fdbce1…

MALICIOUS

PDF

43.6 KB Created: 2021-05-19 22:52:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4263713420ede90cdbc0163d427797b SHA-1: 50ea202116d3439a5e6f3ec15f8d18db004a01ff SHA-256: 2f856c22a9fdbce1b4847fe7830863f21be81f2aa34e3c3586a127148b1c4e03
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-windows-10-edition-hacks-game-hack, which is flagged as a malicious redirector. The document body, though partially obfuscated, also contains this URL and other similar links, reinforcing the phishing and redirection attempt.

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/479516143/minecraft-windows-10-edition-hacks-game-hack In PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://opac.pasca.isi.ac.id/repository/how-to-hack-roblox-to-get-free-robux_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_003_off00004c98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C98 25504 bytes
SHA-256: 78823977ce73ea5820c6e42109642d84f4bddf40e887f4b7d1ce6987e255ca56
font_01_sfnt_off000086ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AB 18696 bytes
SHA-256: 57995c7d2e560419c32609fd78c9e8de7fe6f2ec65952b3fe21507803a80983b

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