Malicious PDF — malware analysis report

Static analysis result for SHA-256 302d03c42f354a2e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 04:51:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1fb5cbecf9d02487d514ae14319bf3cc SHA-1: f292fa27dceb90cce9dae6bf15114fe93f07a093 SHA-256: 302d03c42f354a2e002dbfb1f5c6f505484881f4c78527feccc19edce0fdd9a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that redirect to malicious infrastructure, specifically advertising 'free generators' or 'hacks' for popular games. The primary malicious URL identified is http://netcdn.tw/app/406889139/real-hack-for-coin-master-game-hack. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. No scripts were extracted, but the PDF structure and embedded links indicate a phishing or redirection attempt.

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/406889139/real-hack-for-coin-master-game-hack In PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/robux-free-giveaway-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/roblox-robux-hack-v1-34_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/roblox-how-to-get-stuff-for-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alkhairiyah.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000328e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328E 22340 bytes
SHA-256: 6e2e20de1eaf952499657b4040d32ab4a59dcfae34647eee7e134c8c001ee698
font_01_sfnt_off0000645c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 18240 bytes
SHA-256: ce15f9055fc20859bd8720e1ae39843cc78e3a1a4d12ca4aefcaebee0b1ab8b2

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