Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2f4178fe29a10e…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 11:26:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8258680ce4d824b94f8793a3b11e0aa2 SHA-1: e07269b2c4f1922cb7a16e3d3eab5cdac3790b23 SHA-256: 2b2f4178fe29a10e57a32f655516581f423d96499948b860aee62f4f54541402
180 Risk Score

Malware Insights

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

The PDF contains a malformed stream and links to known malicious redirector infrastructure, specifically advertising a "free generator / game hack". The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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-roblox-codes-game-hack In PDF document text
    • https://my-private-intendant.com/images/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://collectrobux.coIn 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_off0000499e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499E 25732 bytes
SHA-256: 8833aaa051510a47525e3982d4a8545f0a0ab06125246c8424b3e97514c2724f
font_01_sfnt_off0000855f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855F 18124 bytes
SHA-256: b2c67196fbf991b5753887bae8f4e8d608d4d3a0c15e6a0a5d408089f8491e43

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