Malicious PDF — malware analysis report

Static analysis result for SHA-256 37038874555c4d6e…

MALICIOUS

PDF

46.4 KB Created: 2021-06-11 00:56:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 98bfec37001f8006ab5f84913255fcc4 SHA-1: 15c21a6573b63305390dbf143651cb8ea12d8ec5 SHA-256: 37038874555c4d6e25fce7b9bf1f6a5c08844e31bfddbffef67ddd028b093acc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and free currency generators. The primary redirect URL is https://netcdn.tw/app/431946152/javascript-roblox-robux-hack-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/javascript-roblox-robux-hack-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-noob-vs-hacker-vs-pro_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/is-roblox-being-hacked-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005404.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5404 26960 bytes
SHA-256: f984db2843182806fd20cc463174b98e4765f8593cc5b66ced4174371a1a2732
font_01_sfnt_off00009082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9082 19004 bytes
SHA-256: 2e1a100b5a450f503d9c90cda90060502d8b991bd55538d7c2cd53149cd676cb

Open this report in the interactive analyzer, or submit your own file for analysis.