Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43423f1c03ae8c1…

MALICIOUS

PDF

47.7 KB Created: 2021-06-10 19:26:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bea7d01cc45261ce32d00361eeb45167 SHA-1: 28c2ec0178bbb819cc6e17b52573d97569be5f11 SHA-256: a43423f1c03ae8c13cc8c267573e1b09492d37b6ac0d6e9270e5cb5b9ec6106e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9769

Heuristics 4

  • 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.
  • 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.tw/app/431946152/how-to-get-free-obc-in-roblox-within-30-mins-game-hack PDF link annotation
    • http://behsanroshd.com/images/easiest-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-tiktok-fans_GM835599320.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_off0000522d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522D 24712 bytes
SHA-256: 50c5610c9f11d9e3d5ede026e49e84b252ca4cf3dc74b6d419713dc2232468ed
font_01_sfnt_off00008afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFB 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off000094e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E5 19240 bytes
SHA-256: a003435bf0c0fadce422edbf431c448c840685d9c44bed609d8b403ee8ec019c

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