Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d92c1eb4e78e830…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 02:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8a8383d44206879c79919dc82cec442f SHA-1: 4e8e7aed69f857debadc2dc710e1154f726ab0b9 SHA-256: 2d92c1eb4e78e830c49a1c26b1139fb580bb466c936dc1f2a4444dec67544d4d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure appears to be related to Minecraft and Roblox, aiming to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a phishing or redirection attack.

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/479516143/noob-vs-pro-vs-hacker-vs-god-minecraft-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/wurst_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-noclip-in-roblox-with-cheat-engline_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-hack-bars-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-jailbreak-account-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/comment-hacker-un-compt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-download-hacks-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-frost-guard-general-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-rs-500-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-do-i-get-items-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-hack-codes_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_off00002e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E08 22348 bytes
SHA-256: e543082887a3e46b998ff79f784286bb2640e5c3b8f9869d0e145ce35abdcfa5
font_01_sfnt_off00005f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F94 18788 bytes
SHA-256: cca5c8335eb7dad86f4843ad1de19f84038aa266d8c3ffdfef6d5eea3fe15bc0

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