Malicious PDF — malware analysis report

Static analysis result for SHA-256 616e3745622727a4…

MALICIOUS

PDF

35.1 KB Created: 2021-06-18 08:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3a198dc3da564c3c12c4033197fc8883 SHA-1: 084826cce7100072393d6539e52f4a213db11b5b SHA-256: 616e3745622727a47031fb66ec041f7b76f7cbdfa93a095fb66a06256f11c39e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to redirect users to malicious websites, masquerading as generators for in-game currency or hacks. The primary lure is the promise of 'free generator / game hack' content, which is a common social engineering tactic. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-app-is-hacked-game-hack, are indicative of a phishing or scam attempt aimed at tricking 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/roblox-app-is-hacked-game-hack In PDF document text
    • http://schmittmusic.de/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/pokemon-go-free-team-change_GM1094591345.pdfIn PDF document text
    • http://schmittmusic.de/images/pubg-40-uc_GM1330123889.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-for-account_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-free-robux-funky_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-assassin-coin-hack-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://schmittmusic.de/images/minecraft-sign-up-free_GM479516143.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_off00003269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3269 22584 bytes
SHA-256: 929ea8d24e78a75fd58f999c93a2d0098c5d0a7cf63209d9bccd7ef16e875a82
font_01_sfnt_off000064dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 18820 bytes
SHA-256: 43af2b9bea546b08339fb28cb66681f73c141ac74435e067a546e16d96ccd7cd

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