Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac7f2daaac92b61…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 23:38:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f24467936f4382a8d04cd73397fb5181 SHA-1: 0ffa02949f686b7edf20370c84c889d7de66904b SHA-256: fac7f2daaac92b61e6f443d7bdfc26aa0d1250f84fa883a9f07bb81cab870fc1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link identified as a malicious redirector. This redirector leads to a "free generator / game hack" lure, indicating a social engineering tactic to entice users to click. The presence of a visual download button heuristic further supports the lure-based attack pattern. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam 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/coin-master-online-hack-game-hack In PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-two-player-military-simulator-tycoon-money-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-how-to-get-hacked-account-back_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-and-fast_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-trade-currency-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/robux-at-http-free-robux-space_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-invite-friends-free-spins_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_off000034e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E4 22840 bytes
SHA-256: 4520419162dd443ffa5361db4cf733c31b46e946f8bd7ab5c219e3025aa0281f
font_01_sfnt_off00006834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6834 18080 bytes
SHA-256: fae27d4c4c2e952e6b547115e62f69cc1ea43df316298c73a3448a7f0ad6854c

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