Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22144a6c9d0527e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 17:32:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9842bf61bc20d8fde413c059d2115de5 SHA-1: 5471e18e28eb8b484d5d077ed097ace17d037df0 SHA-256: d22144a6c9d0527e293f01ad445e492c8cea351b88a12616e272466dc9b70d70
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.tw/app/479516143/free-minecraft-realm-codes-game-hack PDF link annotation
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hack-menu-download-pc_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hacks-intitle-indexof_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-make-cheats-for-roblox-in-visual-studio_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-free-draw-how-to-draw-a-vagina_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hack-android-apk_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-secret-skin-tone-combination_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/ispoofer-pokemon-go-free-key_GM1094591345.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_off00003124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3124 22152 bytes
SHA-256: a1daf28448d1dc714f17e83f99153724c40bfb1a57ad85143fee49a13183c8f3
font_01_sfnt_off00006202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 18508 bytes
SHA-256: b41cdb960d08f430dcae025247c0b7a65a811430307fe7cd8a623f6c3b070d38

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