Malicious PDF — malware analysis report

Static analysis result for SHA-256 2882cf3358ecb25e…

MALICIOUS

PDF

35.7 KB Created: 2021-06-26 17:41:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1fbf178ff83d39d4c5ef767de970ed9b SHA-1: 529b50b236395d4e44d1ecd26f35a0d854ec53e7 SHA-256: 2882cf3358ecb25eb4292e4c03b69609b8bede8219356e814e77f672ad9cd4df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-hack-roblox-windows-7-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt, likely leveraging a client-side exploit or redirect chain.

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.co/app/431946152/how-to-hack-roblox-windows-7-game-hack In PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-get-free-knives-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/more-robux_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/noclip-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-daily-free-coins-link_GM406889139.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_off000033b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B7 22372 bytes
SHA-256: bb179e970777de44471285745c9a2554beb650aea8b9aad31182b57271666e2d
font_01_sfnt_off00006548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 19368 bytes
SHA-256: 096beb62bb6920e2cb4e90aec813b30161badc41989a254ae90566e336fcada0