Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ff0e0d48c10869…

MALICIOUS

PDF

46.4 KB Created: 2021-06-09 05:22:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d05109d7c7ef9d39413647bd6f807123 SHA-1: 92ea24ef29a7b5ccbaa79316aea7afe2c1d36271 SHA-256: 35ff0e0d48c1086900aac10391a90970297758a1ae99ff9299ea4a94fba970c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, masquerading as game hacks or generators, with one prominent URL being https://netcdn.tw/app/431946152/my-account-has-been-hacked-roblox-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt, likely designed to redirect users to malicious or deceptive content. While no scripts were explicitly extracted, the PDF's nature and the heuristic firings indicate a malicious redirector infrastructure is being utilized.

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/my-account-has-been-hacked-roblox-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-hack-2021-december_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.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_off00005376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5376 26500 bytes
SHA-256: 2a098fba5c34f392f7de3524e8aa712879cd08e24be2fbf7151b6d2ad93fef2d
font_01_sfnt_off000090c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C9 18976 bytes
SHA-256: 40b1a093a5fc0620d10c954d2a917b726497366da00aeaad955d1d8483ef24dd

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