Malicious PDF — malware analysis report

Static analysis result for SHA-256 d758f5cd4a51c785…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 19:04:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a142367191c8f09045ff15887041b1b8 SHA-1: 30591027742bd854bc430ff171971536a601119d SHA-256: d758f5cd4a51c785b63f833899380da3a3cf46cf74d29b20c10fc51993e1911d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a 'free Robux generator'. The document body and embedded URLs strongly suggest a social engineering lure to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of multiple malicious redirector links indicates a high likelihood of further malicious activity.

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-generator-2021-no-human-verification-game-hack In PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/robux-apk_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-hack-online-2021_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_off00004a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2D 24040 bytes
SHA-256: 9b6bd4f44fe749bfa76c8e282fe57818e3032f48c6a54cb985c675a4c7c16107
font_01_sfnt_off000080b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B2 19260 bytes
SHA-256: c7b90a5cfba5c375f14137d6940681acb1ecffd006539937a4c5badd529f0ccc