Malicious PDF — malware analysis report

Static analysis result for SHA-256 123643131991f1c0…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 05:31:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: de821290dfa1c4891a7eed9662f9600c SHA-1: 72600d3cbbd4f0e68a787d28d1779487d933a7c3 SHA-256: 123643131991f1c0ced979903edb7d7b75b1f7c5054c2cb1a5cd7771113ed7e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are identified as malicious redirectors, specifically luring users with terms like 'Roblox Wall Hacks 2021' and 'game hack'. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-wall-hacks-2021-game-hack, which is likely used to deliver a secondary payload or lead to further malicious content. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate 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.co/app/431946152/roblox-wall-hacks-2021-game-hack In PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-catalog-items-on-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-guns-free-fe_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/wie-hacke-ich-mir-robux_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-roblox-accounts-with-no-pin_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/pubg-uc-load_GM1330123889.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 23048 bytes
SHA-256: a6d3e91473dcd60ad0facd6e0effb3a46963e7f488a8b9398300135b9e9a8a4a
font_01_sfnt_off00006504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 19256 bytes
SHA-256: b3cee075cd6bc18f41143ca66ff69c30db17f4e172928fc3c4f55fb5c866e842

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