Malicious PDF — malware analysis report

Static analysis result for SHA-256 b252567a1f378bd7…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 12:02:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d918b7d2fe0ded53e248dd1222f6f46e SHA-1: ad33d5c77b46d7d292943106545d0b20e15dca0f SHA-256: b252567a1f378bd7f86ac00dfc0f77394b0671adf5148254604b8f6717ebf542
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'robux generators'. The primary link, http://netcdn.tw/app/431946152/robux-game-hack, is flagged as malicious. The document body and extracted URLs suggest a social engineering lure to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/robux-game-hack In PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/big-head-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/roblox-someone-thinks-im-hacking_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/hack-tool-for-roblox-no-survey_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-roblox-chromebook-codes_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/roblox-battle-royale-hack-script_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/today-free-spin-link-for-coin-master_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_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 21660 bytes
SHA-256: 02bc7e34d5764389aa3506eb5bf1ee9c5165ac9be16e4fa0933e24269af257e0
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 18552 bytes
SHA-256: da1723751bedafcb1f5ccdcef895f5533c90f7cf63bf49ed0807a84e3f782e55

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