Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7d751abd32eb2f…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 15:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4a0a2f7fd967d47753a290b9fdba2024 SHA-1: 343bf199a8449bba41146a53c5110ae9d13541bd SHA-256: 9a7d751abd32eb2f9d60a3c615a2ee948cc440dab0b18ef9e6e1bb5f3894580b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which in turn hosts multiple other PDFs containing similar lures and potentially further malicious content. The document body and embedded URLs strongly indicate a phishing or scamming attempt, likely leading to further malware downloads or credential harvesting.

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.tw/app/431946152/can-i-play-roblox-for-free-game-hack In PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/hacks-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/all-roblox-portal-heroes-cheats_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-simulator-free-model_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/how-to-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/cheats-for-roblox-saiyan-simulator-2_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/how-to-get-free-robux-in-real-life_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-roblox-accounts-with-robux-2021_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_off00002ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBE 22412 bytes
SHA-256: 81ee7470f129b8ee9dc051b6d12c0c1ca82b7c9b68c7eec4a8ac97cdd7a949b1
font_01_sfnt_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 18984 bytes
SHA-256: 60c174e6a9acb6eaf6d75ac86851b75746a9043d08d3bbe18dd212e8d0b2f632

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