Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90516b903f69540…

MALICIOUS

PDF

34.0 KB Created: 2021-07-19 09:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8beada3c11c836a9f11dec3190dd3e9a SHA-1: a9d5f289642161ef97929c14f91618c085b1541b SHA-256: d90516b903f695406e237879db0a552933b9fbaa100f1187568a42296cae0807
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure that masquerades as a game hack generator. The document body explicitly prompts the user to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', indicating a social engineering lure. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/479516143/play-minecraft-for-free-game-hack In PDF document text
    • http://roberto-gac.org/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-free-spin-and-coins-links-2021_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
font_00_sfnt_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 22884 bytes
SHA-256: 3f1c38c1468ae558f619d65f9f2dbc3f3ce81f6eb370cfabd11f7217287d737e
font_01_sfnt_off00006383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 18116 bytes
SHA-256: 58506b39f0592aa293a22e76cdd5d8324130a94bf097dc81d26ff216ea8060f4

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