Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2da54d7a18e463…

MALICIOUS

PDF

250.9 KB Created: 2021-07-05 14:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1d9e9619ca8dd4c72d6381c8d965d1f7 SHA-1: b2c7a1bb5a1f228dcb73c321805ee7f277c2c363 SHA-256: dd2da54d7a18e463feb2f73f7a12045010522920da11aa0aa2a3d402d0c75f65
140 Risk Score

Malware Insights

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

This PDF document was flagged as malicious. It uses a fake-CAPTCHA lure, an MFA/2FA-themed lure and an urgency-based 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 clean score 0.0098

Heuristics 7

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://netcdn.tw/app/1330123889/pubg-uc-whatsapp-group-game-hack PDF link annotation
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-1-million-in-jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-roblox-items-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-bc-generator-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-generator-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-codes-july-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/admin-command-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-exploit-download-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-bc-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-cheat-engine-how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-you-paste-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-comrobloxplay-now-for-free_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_024_off00037d73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37D73 25928 bytes
SHA-256: fdcb67f364d328234c8618c37cfea43c7131d7436f7ba58108bb5bed775a614a
font_01_sfnt_off0003ba8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA8C 18912 bytes
SHA-256: 9734a97cd5d01b00594168fed5ef9f860412838bc31010aa849a5cf7b52d1aa9

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