Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e30790bf1f6de9…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 06:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 44d71a6d39f82718d51325ebbec0a09a SHA-1: 0b47af28904b62412d744356f865c534de54581f SHA-256: 90e30790bf1f6de9eb7d1202790d2e1068c3954bd21b17e982e0d85a719686a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting "game hacks" and "generators". The ML classifier also strongly indicated maliciousness. The document's primary function appears to be directing users to potentially harmful websites through deceptive lures.

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/completed-coin-master-hack-game-hack In PDF document text
    • http://stpc.it/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://stpc.it/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-robux-that-actually-works_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_off00004853.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4853 25124 bytes
SHA-256: 21fc7795d0524f15cb7506c84679b94ef9dfafd1137a89dd2ebd114cb35dfeac
font_01_sfnt_off00008222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 18400 bytes
SHA-256: 797855796ad56610e81a33532725bd96b3cb453fd24eae28a344109feab08f19

Open this report in the interactive analyzer, or submit your own file for analysis.