Malicious PDF — malware analysis report

Static analysis result for SHA-256 d77a3348c36c0015…

MALICIOUS

PDF

43.4 KB Created: 2021-05-14 13:51:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 856366a8c679342af8751fb3588ebdac SHA-1: 37f46e42dc0c4a62cf66d0fe5d40afbfc4b1b259 SHA-256: d77a3348c36c00150797ccdaad4ed81695948ed8dc8a34d80aa7235a69c17740
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as free game hacks and generators. The document body, though partially corrupted, contains text and URLs consistent with a lure for free in-game items or cheats. The embedded links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/479516143/free-minecraft-realm-codes-game-hack In PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/earn-roblox_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/corn-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-robux-no-verification-or-survey_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
stream_003_off00004f78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F78 24832 bytes
SHA-256: b0c473c5da16206136e0fd65fa3291018e591b29e3ea742e3bb89dcf804a6e0c
font_01_sfnt_off000087b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B0 18216 bytes
SHA-256: 112831491273e470c6e89805da9a532ffdffe59a8001213273075a33f4492bfc

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