Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e1670ff69c8cc7…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 03:54:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 915128242d082b87c92e40db85cce0a4 SHA-1: 9fd81858bbfaaf4f3c33542fcfc572d6ef5ca02a SHA-256: 01e1670ff69c8cc71d9bcc7d779f5fb7d784980c619d6f7e7edc9dfd9c6a8737
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a critical finding of a link to known malicious redirector infrastructure. The document body and embedded URLs suggest a lure for game-related cheats and hacks, likely leading users to phishing or malware download sites. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly indicate a malicious intent.

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-skins-download-free-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-piano-keyboard-cheat_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/why-free-robux-is-not-true_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/fashion-frenzy-game-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/easy-jeje-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-rich-roblox-accounts-and-passwords-that-work_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-in-skywars-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacking-on-alt-account-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-hacker-un-compte-roblox-pc_GM431946152.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_off00002e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E25 23432 bytes
SHA-256: 1b2d50419dffec26ea52b30315efea9df77b503d5fc6c9f12be0f76a4029827b
font_01_sfnt_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 19444 bytes
SHA-256: a477abd7b451c6c96892dc9e77c5769e4574619f25effbde1b3c124bd3ae8f5c

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