Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55e9ffb65a41048…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 10:03:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4a143e3b02fae51cac034c19fa5dcffd SHA-1: 36392a539db9b19f87df4b16019124438d91d513 SHA-256: e55e9ffb65a41048577095de6cfd1f699290742214ced131bfa7a78ce59efd8c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of game hacks and free currency. The primary link, http://netcdn.co/app/431946152/can-you-use-cheat-engine-with-roblox-game-hack, is associated with known malicious infrastructure. The document body and embedded URLs suggest a phishing attempt related to popular games like Roblox, aiming to trick users into visiting 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.co/app/431946152/can-you-use-cheat-engine-with-roblox-game-hack In PDF document text
    • https://jdclassicautoparts.com/image/data/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-cheat-codes-rocitizensnovember-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/vrbx-club-free-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-no-human-verifacaition_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-jailbreack-money-hack_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/make-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_off00002ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBB 22564 bytes
SHA-256: 2e3b364b02662b5c57f14f6744ea597bf3ac0563bee5cb680f35aa059746c229
font_01_sfnt_off0000614a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 19376 bytes
SHA-256: 17287618bc57a0ca5aecc6a2e984991f9c5e68e93bc74403519b88f733c9044c

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