Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56be47677adb40e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 16:14:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e9b1971de65da5fd1bbc15305f4baeab SHA-1: 76b8d1d9fe40779c914ca564ff60624eceea4fad SHA-256: e56be47677adb40ea6966e0cc7696f7f97d3744b5ace812d88f050665ada7502
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded text promoting 'free Robux' and game hacks, directly linking to a known malicious redirector. The document body and heuristic firings indicate a lure for users to click these links, likely leading to a phishing or malware download site. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/how-to-get-free-and-easy-robux-game-hack In PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/cheat-codes-for-bounce-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/accounts-with-robux-free-rocash_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-easy-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/este-es-el-unico-hack-de-robux-funcionando_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/new-update-roblox-free-2021-explot_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/everything-free-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-play-roblox-on-xbox-360-for-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/aimbow-hack-fr-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robloxcom-how-to-get-free-robux-only-today-ad_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/arcade-tycoon-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/live-roblox-bubble-gum-simulator-hack_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_off000030ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CA 22244 bytes
SHA-256: 8720d64c454d486942a5e820cba47c9582d4884debbbacd2db013c18378d5dc8
font_01_sfnt_off00006220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 19340 bytes
SHA-256: 710ea5e1183e130bd2ad89f8a1b6c2bf7de3a1ccf674d50b40bde00af9c58792

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