Malicious PDF — malware analysis report

Static analysis result for SHA-256 4733e540a353e56e…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 06:22:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c467e8c4059f279f79314f630de9933b SHA-1: c57b66ee30913432419ae42652c29fa51e661610 SHA-256: 4733e540a353e56ead3feba783fd1aae6e046c673819578a7890131617567d4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically targeting users with lures for game hacks and currency. The primary redirector URL is http://netcdn.tw/app/431946152/mobihack-net-roblox-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

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/431946152/mobihack-net-roblox-hack-game-hack In PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-jailbreak-airdrop-hack_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-keeps-freeing-whne-loading_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-clone-tycoon-2-codes-hack-get-1-billion-gems_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-hack-2021-with-no-oprewards_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/robux-free-ohne-telefonnummer_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-get-free-roblox-skins_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-noclip-hack-wearedevs_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-shirt_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-scan_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/pig-master-free-coins-and-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_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 22588 bytes
SHA-256: fa41ca27004043fdebeed44345d93e5269ebbd39158c49228de37141bb82118d
font_01_sfnt_off000061cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 19244 bytes
SHA-256: 88e598bc89789b8ac21b9f126080391bbc9d3fa977fc33123edec0983ecad616

Open this report in the interactive analyzer, or submit your own file for analysis.