Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc42fcb390e9b4b…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 16:50:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 018c8eb5fce70675d135d24f1cde25bd SHA-1: 74b27a4cbd10284aa684dad39bafed307496c168 SHA-256: 1fc42fcb390e9b4bd7aed38350ec023d17f738564e0b519ae3ff8bbffff8b2a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be the malicious redirection links.

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/free-candy-roblox-decal-game-hack In PDF document text
    • http://bgnails.nl/images/roblox-games-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-roblox-items-catalog_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-assassin-free-coins_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-account-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-roblox-shoes_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-call-meh-bob-roblox-youtubecom_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/robux-free-xyz_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-fly-in-roblox-using-cheat-engine_GM431946152.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
font_00_sfnt_off00002ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBB 22396 bytes
SHA-256: 858cdb1843d76ee212fc38ea470bc44ea5b4d3979830ee9f7a760a4e950859e7
font_01_sfnt_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 19172 bytes
SHA-256: 6b548b6f79cb43e8fb0210ce32e6695abd0af02156a8825d190a5e5e7c1fa907

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