Malicious PDF — malware analysis report

Static analysis result for SHA-256 944f4c894979662f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 20:56:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 112ea70654b0a465dfcb9245281104fb SHA-1: 77f41d8ef6bf7a033d59b46ae28aaf74cbc36fa0 SHA-256: 944f4c894979662f8b3b579538f9d507f86a377c8d19dfe2858fff9277c257bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'robux generators'. The primary link, http://netcdn.co/app/431946152/how-to-get-robux-back-if-i-was-hacked-2021-game-hack, is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF's structure and embedded links strongly indicate a phishing or scam attempt.

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.co/app/431946152/how-to-get-robux-back-if-i-was-hacked-2021-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/get-robux-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/can-you-make-shirts-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/gain-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-xtimothyy_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-virtual-item-codes-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-gift-card-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/numero-card-robux-50-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/robux-money_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hack-for-vehicle-simulator-roblox_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_off0000303c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303C 22332 bytes
SHA-256: ec70f66a528b13eaee0ac9078bcaac784c57f3cb9631a1332d331f2bc7a082e0
font_01_sfnt_off000061e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E7 19764 bytes
SHA-256: 040172d3016d2078915bd995c4549eb7336656702cf84a6136fb19289dd6003c

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