Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aafffb7718eeae7…

MALICIOUS

PDF

33.2 KB Created: 2021-06-28 08:38:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 43c5603e783426341ff85f1e696274a3 SHA-1: aaa41b49b8526ea9cd7a27656b0dfd05721860c5 SHA-256: 3aafffb7718eeae7063a8d0e29b377b92e00849833a723af9957c81bf42ace35
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks. The document body explicitly mentions 'How To Hack Bed Wars 2 On Roblox' and includes a call to action for a 'ROBUX GENERATOR'. This indicates a phishing or scam attempt designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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) or Microsoft license-boilerplate 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.co/app/431946152/how-to-hack-bed-wars-2-on-roblox-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/da-hood-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/real-robux-hack-no-survey-2021-february_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/gameblox-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-999999-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-paginas-que-te-dan-robux-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-play-free-online-no-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-space-miners-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-obb6_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/comment-cheater-sur-roblox-relail-ticoon_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-studio-app-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/microsoft-rewards-robux_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_off00002ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB3 21996 bytes
SHA-256: 0a7c63982f10cb5f05bec96ac47a5cfd58284cf971ed9ba0dcbed9611c60e46a
font_01_sfnt_off00005bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC2 19316 bytes
SHA-256: ae5d807088615b39567734252a637e807662937d84f472c51fa06a1c8d6d0eac

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