Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6e42d8e50287ed…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 19:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0c2c115137d5d0787bd14bf330c2ae44 SHA-1: 9625bc2e3781f6ea8c5f0a63cad5510f5475619a SHA-256: cb6e42d8e50287ed08d9635d136e6a2d745b45afdf5b73eb02428550bd71bb76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free items to entice users to click on embedded links. The primary link, 'https://netcdn.online/app/479516143/free-custom-minecraft-skins-game-hack', is identified as leading to malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirection workflow, likely intended to lead users to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/free-custom-minecraft-skins-game-hack In PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/pubg-uc-with-jazz-cash_GM1330123889.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5310 25264 bytes
SHA-256: 2c50880863d087ad4f492728f2264fc284b7e8b881fc7bf56169f30b97923ad5
font_01_sfnt_off00008c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off000095ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95CA 18280 bytes
SHA-256: ec10c50983ae4d489d577a547491e9239078f829f0002f8f667bd43cad21040b

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