Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a143f1f42a200b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-02 04:13:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4d0987f635ff6f7218f6b7099a8c78a SHA-1: b614ef9ff130558ca1c4697ff591ebd7d7341e29 SHA-256: 01a143f1f42a200b36a0dbc1a347da046512135614dedde19b4001d48cfe79f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with one prominently featured in the document body, all related to obtaining free Robux or game cheats. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of it being used for phishing or distributing malware. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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/how-to-get-free-robux-no-nothing-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-admin-games-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-faces-on-roblox-names_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-dll-hack-952021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-by-just-clicking_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/discord-free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hacks-en-csgo-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-font-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/best-groups-to-join-for-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/scaciati-mega-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-roblox-clothes-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-only-today_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-free-robux_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_off00002db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB0 21964 bytes
SHA-256: f25ca748b84928c6e85e9fc3ae5664fa07f0038c4748844ca7fba76bb71669bd
font_01_sfnt_off00005e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E17 19272 bytes
SHA-256: ed7d996c343fd0a432b803ac3e50242514c92360f97eb0bf4d677f0d9f3da16e

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