Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc4feb1054b5645…

MALICIOUS

PDF

32.5 KB Created: 2021-06-18 01:24:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: a3ee62521bdfe0df5b9b38bf02e84c18 SHA-1: 3ccd2f7b843ee36e1a5b560ca4c5a7cd3ff7cd41 SHA-256: 7cc4feb1054b56456c1280684d967c4b0efd57904ce36478d379955b52e75f44
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as offers for game hacks and generators. The document body explicitly mentions 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The presence of these links and the lure indicate a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/t-shirt-roblox-free-game-hack In PDF document text
    • http://bgnails.nl/images/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-online-robux-generator-no-download_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-crashes-every-time-i-run-cheat-engine_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-roblox-virtual-item-codes_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-today-daily-links_GM406889139.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_off00002901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2901 22472 bytes
SHA-256: f31565b15e4cf5a845db7ead1daa6807dfc9a57f3bc9338b2e636212fd2b14de
font_01_sfnt_off00005b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B11 18856 bytes
SHA-256: 2036cae2a24e0b55bc4d8aa402fb287652a5c5863f49b2923176196e6bbff7e7

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