Malicious PDF — malware analysis report

Static analysis result for SHA-256 630d3f4f8d5e2c25…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 12:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f16e7df3580d091a9a5ac71591aab70 SHA-1: 0c6c2c4822f229fe6cff56cdeb00b8011b905e92 SHA-256: 630d3f4f8d5e2c252dd315e585b97b272bfe1f968c89a04e28465a1153a360ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and free generators. The ML classifier also flagged this PDF as malicious. The document body and embedded URLs suggest a lure to trick users into clicking malicious links, likely leading to malware downloads or further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/master-coin-free-spin-game-hack In PDF document text
    • http://hindicenter.com/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/coin-master-unlimited-free-spins_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F1 27684 bytes
SHA-256: 87ac58ae497f039a1da76d44bcc5a244dc4f9cc9320c7812d48da4202d8d3a3d
font_01_sfnt_off00008642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8642 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF3 17884 bytes
SHA-256: 2eace5707960ab6674c345fc5925bb74d79b72c9d0e947ec779627780b9711cb

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