Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f31a8ba1e4985ba…

MALICIOUS

PDF

33.4 KB Created: 2021-06-18 04:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c02564290bb143b0e19917cc94d9c063 SHA-1: 6b330e363745e4a7f66ca002e719bff756cae8c0 SHA-256: 2f31a8ba1e4985ba30359c24f87e8fc73dd885c62cbcc2873c58ae4c58537d00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary redirector URL is http://netcdn.co/app/431946152/hacks-for-roblox-rocitizens-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware or engage in scams.

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/hacks-for-roblox-rocitizens-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-5-steps_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheats-pour-madcity-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-pokemon-cheats_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-verificationor-offer_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/pokemon-go-free-poke-coin_GM1094591345.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hacks-for-sprinting-sim-roblox-for-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-likes-no-human-verification_GM835599320.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_off00002d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D95 21756 bytes
SHA-256: d4e9e601d02dc5b98b8949ccdc3adcd753be68f92eb6caf93e1bced8c370b81e
font_01_sfnt_off00005d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2B 19128 bytes
SHA-256: 6ac03087b32b4b6da7f2a97042b70b86df48a80abb185fbcbd1b6ee3297dc7fc

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