Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f49e6d2a9077d8b…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 03:58:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d31bbbedffc67161d48a0ff7269cdfa9 SHA-1: 6b114f741d7efaec5fb9e4b71cf413cd146633b3 SHA-256: 2f49e6d2a9077d8b4403298ce5e6c513ed6ed620060437a017d1608e892d5440
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link redirects to malicious infrastructure, and the document itself is structured as a link farm pointing to other SEO-optimized PDF files. The presence of a 'password-protected archive' lure suggests a common tactic to bypass security scanning by encrypting a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-get-a-dj-pass-for-free-on-roblox-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-bubble-gum-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-into-roblox-groups_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-teleport-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-fast-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-no-survey-no-password-no-virus_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-geht-free-robux-no-human_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/lazyblox-com-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-to-get-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-conseguir-robux-gratis-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-promocode-for-robux-july-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-me-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_off00003351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3351 21740 bytes
SHA-256: 4272f97f67863f43886fb5cf494d40e0861d6caa197837f56e4ffe2778f6e9a1
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 19428 bytes
SHA-256: c4d3ca06711e78149782c8f6f51e8afb76c61ad37604aed839716026590734fb

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