Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4ad22328b58106…

MALICIOUS

PDF

45.5 KB Created: 2021-05-15 07:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fb7e06baca493d694c14bbe6d2ed9a6c SHA-1: 48a00cd5afc94bb48d1e316707aa8839d8059c18 SHA-256: ab4ad22328b5810676bc648b22382a4dbc70511e86a3cf5844097b864e6770fb
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-make-a-modded-minecraft-server-for-free-game-hack PDF link annotation
    • http://ptts.pl/images/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/easy-robux_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://ptts.pl/images/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://ptts.pl/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ptts.pl/images/roblox-gang_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEA 25068 bytes
SHA-256: 0ffd858f1071df20125a40ee136d98808ad24ca5f96be580fa85be3a5504b3d8
font_01_sfnt_off00008577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8577 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00008f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F16 18332 bytes
SHA-256: 59959101681fb4a2744844bcdf3902b1567deffd11dd3ddee6423be8a335a742

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