Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ad168e9769214e…

MALICIOUS

PDF

48.3 KB Created: 2021-05-19 02:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 44f22efb0d894c5f5f1eef92ead3ead2 SHA-1: 30139fc80c788178cf7172ca10b7d6b5fed908f6 SHA-256: c2ad168e9769214e2702d490faf4189bee1c1cb6728df0bf4c6476124a1e9326
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free Robux' and 'game hacks'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/wahoo-gaming-co-free-robux-game-hack. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users seeking in-game currency or cheats. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/431946152/wahoo-gaming-co-free-robux-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-win-10-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B53 26752 bytes
SHA-256: 9cb7952ff9407885d4acfc23d03851f46d5369fe968c90986c26f8fffe3b8ad3
font_01_sfnt_off00008a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9C 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000097ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97AE 19272 bytes
SHA-256: 72186c943ebdf5aadbcd95d877410298c2bcf6c8326a7dd5e0ae66436694e568

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