Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6bbb559252e251…

MALICIOUS

PDF

44.2 KB Created: 2021-06-04 02:12:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3e1d97060fd1cb1823e1db4afef0f96c SHA-1: a1621995df80b75be3e30d8e67a258cf6cd67d6c SHA-256: 7a6bbb559252e251e31a05b401009d2fbe6ea9c0aaf71a32df923f07d02105a8
122 Risk Score

Malware Insights

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

This PDF document employs a lure related to 'free Roblox money' and 'game hacks' to entice users. It contains a link to 'https://netcdn.online/app/431946152/how-to-get-free-roblox-money-game-hack', which impersonates Amazon while directing to a non-matching host. The ML classifier also flagged this PDF as malicious, indicating a high likelihood of a credential phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/how-to-get-free-roblox-money-game-hack.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.online/app/431946152/how-to-get-free-roblox-money-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-noclip-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/boku-no-roblox-hack_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_off00005020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5020 25536 bytes
SHA-256: e4d6cb6eafd9974cea55bfa217ec189dfd84941546d9640e278a139b996e384a
font_01_sfnt_off00008906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8906 18592 bytes
SHA-256: b73f1f0d33754a6311a400e0f9b7fa1bed8423beec91854f27c9eb8add8b4fcc

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