Malicious PDF — malware analysis report

Static analysis result for SHA-256 760f2fd74358c452…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 02:06:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 135533859f5ae38b06a3683c7a3de004 SHA-1: c04611669a932fa8958cedfc1088fb5088dd115d SHA-256: 760f2fd74358c4525e7f099e7376174157cdc9908c3e665350c83dc41ba215cb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to websites promising game hacks and free currency, such as 'Roblox Zone Free Robux'. These links are designed to trick users into visiting potentially malicious sites. The presence of multiple similar lures suggests a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/roblox-zone-free-robux-game-hack PDF link annotation
    • http://stroygrad-spb.com/images/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://stroygrad-spb.com/images/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://stroygrad-spb.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://direct-link.netIn 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_003_off00004893.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4893 27752 bytes
SHA-256: a8662891485c015ec2601747d7f84b0b248e0f51c68678f8c5c92b487f7e824c
font_01_sfnt_off000087b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B5 18180 bytes
SHA-256: fa0bfd9229dff732b79349aec0b82eb394b94074e398d1bd7575aad3963e16a1

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