Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c4148f3c7d5356…

MALICIOUS

PDF

41.8 KB Created: 2021-05-13 17:31:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7006eb17e6029fb7a91e77719ec39c0c SHA-1: 816d989506e262a51be31729ae1e4b7a898b1272 SHA-256: b0c4148f3c7d5356d0ace1ad4a7295a1b0d058fed987302cdd9489e6e793ab0d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering "free Robux" and "game hacks", which is a common lure for phishing and malware distribution. The heuristic firings indicate that these links lead to malicious redirectors. Although no scripts were explicitly extracted, the nature of the lures and the embedded URLs strongly suggest an intent to redirect the user to malicious content, likely for credential harvesting or further malware delivery.

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/431946152/free-robux-without-any-verification-game-hack In PDF document text
    • http://garrisonjazz.com/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://garrisonjazz.com/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://garrisonjazz.com/images/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://garrisonjazz.com/images/free-robux-generator-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_off00004784.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4784 24004 bytes
SHA-256: 79ac4cc28fffbb9db1cea39531c3d2f96d2fc37332d8e2636b8cce670c09e47b
font_01_sfnt_off00007e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4F 19144 bytes
SHA-256: f37955fcb4845292a10cf385cf7825d095aa25907e4328d2f78dbaed4e94b6f7

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