Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f35f8e59768f8d…

MALICIOUS

PDF

53.1 KB Created: 2021-05-11 02:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 07ef2a8728ea5e0e35e10e10701e77f3 SHA-1: e5c13bab60c9413ae07667359aac7c359865cdde SHA-256: a5f35f8e59768f8d11ec787c250163c1705ebde12ce053b6c06a6bff34c4866d
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 0.9231

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/how-to-get-free-robux-in-2021-game-hack PDF link annotation
    • http://mohacad.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pro_GM406889139.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
stream_003_off000049ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FF 39224 bytes
SHA-256: fbb9422b355e87efb2979c721b5bbbf523649bd8100013386b10475e030c9add
font_01_sfnt_off00009f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F37 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000ac48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC48 18684 bytes
SHA-256: 824acc3fee39cc83a95b513dc81155ec57b17e0207e8ef2cc186232f9d88d4f0

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