Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ba3b4a88385b83…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 09:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9a26faf6de351e1c676d52747a587aab SHA-1: f1a9149e5a9278457329b1f0655e66a761d5ed9f SHA-256: b2ba3b4a88385b837d69f47faa454bcb5339c5b62b495a9c8f4a330e4006734e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary malicious link identified is http://netcdn.tw/app/431946152/roblox-sued-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs suggest a lure for users seeking cheats or in-game currency, a common tactic for phishing or malware distribution. No scripts were extracted from this sample.

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/431946152/roblox-sued-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-jailbreak-freeing-prisoner-from-handcuffs_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-para-roblox-hospital-roleplay_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-guest-chat-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-shading_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-money-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cookie-hack-roblox-players-on-galaxy-note-8_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/download-free-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-a-account-in-roblox_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_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 22676 bytes
SHA-256: 640504050c42c0623a2494c3f1e2462fbb4eade0c4835139e9b6c177a35b9c18
font_01_sfnt_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 18800 bytes
SHA-256: 9a05e7e1c0614708cb8466c7377e7c090789c3e14fdc8fef9f4b71d9e6d69369

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