Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe7574ff7cecad8…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 10:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d54dd438ae8738b7f12a01f6957f0b41 SHA-1: 2ee3c60dcb77b8493b22a9b12f17a293c26b2def SHA-256: 0fe7574ff7cecad866ebc97045c2fa41aa237ba883785cc8864dc8822ae6a3b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for a "free generator / game hack" which links to a known malicious redirector. The document body and embedded URLs suggest a scam aimed at tricking users into visiting potentially harmful sites. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs strongly indicate a phishing or scamming attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/free-minecraft-client-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/www-roblox-free-rewards_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000549c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x549C 25136 bytes
SHA-256: a75cd454fb6648837cd0aee198803a58fe58e30d12831e4854a27361af07e7e4
font_01_sfnt_off00008d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D96 3080 bytes
SHA-256: 8be08e7e3b4a1f3ab2eac32f3c81f28e1ef4df83db31097de1f0e36c1d52c5eb
font_02_sfnt_off0000984d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984D 17644 bytes
SHA-256: ce5b71cd939a97bbe405c9e475902c75b00f7b9e8e716883d10cd93b76626efe