Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12f4475c68a3d84…

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 11:40:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e0890a83040d204693b7e5920e05a1b8 SHA-1: 1b45b4145efccf9f85cf65b81240dc4c4987310e SHA-256: b12f4475c68a3d841a476fc926401ff34051f9e922cccf3911638a6b27d4e3df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free in-game currency. These links likely lead to further malicious content or exploit delivery. The ML classifier strongly indicated maliciousness, and the presence of redirector lures confirms a deceptive user-engagement pattern.

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/479516143/mcpe-game-hack In PDF document text
    • http://www.boic.nl/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/mcpe-download_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/i-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-codes-no-verification-2021_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_off00004a5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5F 24464 bytes
SHA-256: 70796acf10952e9342a9061ef3f60d76edc87d1d67e74f4c962da80bc36e677d
font_01_sfnt_off00008267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8267 17292 bytes
SHA-256: bad2551fb36a1ff37c0a2928a0b0bdd7baf715808b6c6c89c87aa6c39ddc14cd

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