Malicious PDF — malware analysis report

Static analysis result for SHA-256 7572b9fcaccbc136…

MALICIOUS

PDF

33.0 KB Created: 2021-07-03 12:15:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: eeb536043ea721ef2a34cd562a61603d SHA-1: 189e30b6bc02d09adf334d7624bd4a632c60a400 SHA-256: 7572b9fcaccbc136dd2a377f763d2ffe85c7fc5634aa72a8c348d42cc0ee29f3
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as 'free Robux' or game hacks, aiming to redirect users to malicious websites. The primary redirector URL is http://netcdn.tw/app/431946152/how-to-get-free-robux-codes-game-hack, which is flagged as malicious. The document body and embedded links strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

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.
  • 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.
  • 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-robux-codes-game-hack In PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hack-noisense-diamond_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-models-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/passengers-in-free-roam-in-flight-simulator-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/descargar-roblox-hack-robux-infinitos_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-driveblox-unlimited-money-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-pastebin-com_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-obc-robux-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-arsenal-hacks-mobile_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-exploit-free-no-viruses_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-create-private-server-in-roblox-for-free_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_off00002afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFB 22028 bytes
SHA-256: 4f385d3897c03dea1ab2cb16e1d5465cc57c809a22d6473ec186d20352ee6959
font_01_sfnt_off00005bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB2 19156 bytes
SHA-256: d834416b7e9185468f589fe40c9632ebbdbdfe97c28f85986fef52e4c0b1d557

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