Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a4132fda102d0f…

MALICIOUS

PDF

48.6 KB Created: 2021-06-11 13:00:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee2d1d91b285b63def491bebd7f78594 SHA-1: f49640ce96d386a8fc8406bd3d230a826a321706 SHA-256: 80a4132fda102d0f5ad46175681cffe4f8478f183dfca4448dca2baec12cd89c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures for popular games. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary function appears to be directing users to potentially harmful websites through a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/roblox-bux-free-game-hack In PDF document text
    • http://artistaone.co/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-points_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52D9 27296 bytes
SHA-256: 659b48da862b2b026dcf39393faf42b235c004448157e085a395623693573abf
font_01_sfnt_off00009208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9208 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 18088 bytes
SHA-256: b1a1c5aa5d70c9a0c9451475d1836048e8ca34dc29aa31eabf35c019fc4d80ab

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