Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d59736ae4f22e0…

MALICIOUS

PDF

45.5 KB Created: 2021-06-04 01:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 470678fa300db5a1f722b6ca00b2dc86 SHA-1: d0d2eccd749f68534d081ad0b31f151520f1c10f SHA-256: f3d59736ae4f22e08d1551ee4e3c8099bfe924c4625e6e9b2839315f15f1bb28
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors, masquerading as a 'free generator / game hack'. The primary lure is a link to 'https://netcdn.online/app/431946152/is-roblox-studio-free-game-hack', which is designed to trick users into clicking. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/is-roblox-studio-free-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/plug-toolbox-for-minecraft-free-ios_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000531c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x531C 25612 bytes
SHA-256: cce1de2b5ede937b83a729aacf500037831ea287e1a250deb7408ea334c1a2ff
font_01_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 18484 bytes
SHA-256: 8c5b4094469af548f1fa9842e12df6aaf158939a09e061110ae6a0a8023b94b8

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