Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b4e5f06dba6c1c5…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 09:32:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c8bb66c4066fe4c9b8c0bf5fa3031365 SHA-1: d1be8ee3759e3ae2311babd0b3fa0da9311d277d SHA-256: 3b4e5f06dba6c1c587d662c1731fd9e0dc7bae5ca85e1fdea52df82d10a337c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks, specifically targeting Roblox users. It contains multiple embedded URLs that lead to redirectors and potentially malicious content, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and extracted URLs suggest a phishing or scam attempt designed to trick users into visiting malicious sites. 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.co/app/431946152/roblox-girl-shirts-for-free-game-hack In PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/rbx-center-free-robux_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/cheat-engine-63-roblox-tycoon-hacks_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/free-sample-roblox-download_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/free-roblox-cute-girl-outfits_GM431946152.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/jojo-roblox-items-free_GM431946152.pdfIn PDF document text
    • https://www.pasangindovisionjogja.com/ckfinder/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pasangindovisionjogja.com/ckfinder/userfiles/files/how-to-earn-robux_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
stream_002_off00002f8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F8D 22816 bytes
SHA-256: eda5668c0f4923d4845a645141ed17c079414f080376eb7f35f4bc9c4005004c
font_01_sfnt_off000062e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 19040 bytes
SHA-256: 11dc966c0dff82dc846501694117a28d5e7014170ac8b3ac0ecfe8ccca56b344

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