Malicious PDF — malware analysis report

Static analysis result for SHA-256 f141ad90a65bd4fb…

MALICIOUS

PDF

33.9 KB Created: 2021-06-20 16:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac3fadc94db0680c91795b2a04074ed7 SHA-1: 50eba9d23fe4c48aea9db4147e2c75b5375601f8 SHA-256: f141ad90a65bd4fb61967d48900962a5ba59a998228a803d4acca99ec60ec470
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary URL, http://netcdn.co/app/431946152/is-there-anyway-to-get-free-robux-game-hack, is a clear indicator of a phishing or scam attempt. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at redirecting users to potentially malicious sites.

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/is-there-anyway-to-get-free-robux-game-hack In PDF document text
    • http://elektrofahrspass.de/images/roblox-jailbreak-invisible-hack_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/gamekit-robux-free_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-group-payouts-roblox_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/cheat-roblox-mad-city-money_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hack-denisdaily-on-roblox_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-hack-someone-on-roblox-on-a-phone_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-hack-robux-420_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0F 22248 bytes
SHA-256: dca8bc18dabbd513f7917e3543b1103e6f28434dd39b0ee42c57befe9b614f99
font_01_sfnt_off00005e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 19332 bytes
SHA-256: 6a4cd57df63caaaca74cd4b205796edbb11f838ac4961cd9d6e5e2dc6f373f13

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