Malicious PDF — malware analysis report

Static analysis result for SHA-256 befc4e719aaa9a28…

MALICIOUS

PDF

45.4 KB Created: 2021-06-07 09:45:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 67094dc745fcd7be5551fea67e500778 SHA-1: 7a6efd203d97d5a8cdd122795c51169f49735a70 SHA-256: befc4e719aaa9a2850d0ae2c995c8fb77d3214e03b22f8a5524894b4e658fbcf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious URLs, likely as a first step in a multi-stage attack. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9813

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/free-robux-aidain-game-hack In PDF document text
    • http://force-seniorklub.dk/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-rape_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://force-seniorklub.dk/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spin-app-iphone_GM406889139.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_off00004fbe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBE 27100 bytes
SHA-256: 61fd717e6ec66fc60d1ea355f6d69ab1053d01222dcb9531958f7449a5fcbaa3
font_01_sfnt_off00008c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3B 19172 bytes
SHA-256: 1c079c12ee2cdc85ce885434a95568df2e01cbfb92e526cd43daac24787e55a1

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