Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fdf8a00e80257a…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 22:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 50fa5bfca957aa4678dc330b5d3ebc60 SHA-1: f93dc9f688214ff167780a70d8118548c42cf79d SHA-256: 01fdf8a00e80257ada574d176c599e34425b8c75badd7728468df6d23aed463e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators. The primary lure URL, http://netcdn.tw/app/479516143/is-minecraft-vr-free-game-hack, is flagged as malicious. The document's content and embedded links strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

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/is-minecraft-vr-free-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-card-codes-roblox-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-project-pokemon-dll-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-urbis-cheats_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-20210-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-web-site-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/comment-avoir-pleins-de-money-sur-roblox-en-jailbreak-cheat_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-wallpaper_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-pokemon-bronze-brick-cheats_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-cheat-engine-august-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-cheats-free-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_off000030cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB 22448 bytes
SHA-256: 14ccc2b43d67651bb34f50d320bd25629112e541c09b93d42db67402720d39b3
font_01_sfnt_off000062bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BB 17988 bytes
SHA-256: b0ced143575b158626b16a0b912dcaafc45e1ef0ad694bde4acea2ec78676362

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