Malicious PDF — malware analysis report

Static analysis result for SHA-256 36245e0351561981…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 00:00:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 09278da644db4826d95c7a76c4fa518c SHA-1: 100573af46d614aabcb1fd4a80769be338b03870 SHA-256: 36245e03515619815304c64810f20de8446bb4b4d6b4d49387d34cbed6d5c1ad
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 0.9980

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 http://netcdn.co/app/431946152/free-roblox-robux-generator-no-survey-hack-tool-game-hack PDF link annotation
    • https://www.nara.org.uk/uploads/files/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/pokemon-go-free-pokecoins_GM1094591345.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-redeem-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/nintendo-switch-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-bloxburg-money-hacks-25-febuary-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/como-ser-hacker-en-roblox-pc_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-tiktok-likes-no-human-verification-or-downloading-apps_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD9 21900 bytes
SHA-256: 2348fcac2d4db47aa31ddc44e7e74a1bc118baf51ef2d00e5f7e4c3b2801bc49
font_01_sfnt_off00005e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 19356 bytes
SHA-256: 55265234355c60c3ef6678a9b99a5c97b86461d28ee484b7a92c3745f743f73d

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