Malicious PDF — malware analysis report

Static analysis result for SHA-256 af556890e39a1611…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 14:14:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 171942e9e55e8ec3b638e7e4e05af82a SHA-1: a99dd945f3c348a868fba01255636fe8c0002453 SHA-256: af556890e39a16114715c40518c0290365a18d3cd7c5d550ac4376a9fce743d4
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/how-to-hack-in-roblox-jailbreak-2021-february-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-often-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-acc-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/icepprof-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-use-cheat-engine-for-executing-scripts-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/pokemon-go-free-bot_GM1094591345.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-paintball-cheat-codes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/my-brothers-roblox-account-got-hacked_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-coins-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-find-out-who-hacked-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/games-voody-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-trial-no-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-free-robux-no-human-verification_GM431946152.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_off00003122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3122 22208 bytes
SHA-256: dc842ed9eaaca3024ab498940a7a82a1aab2780890d83a939f66e3ffbcd42ad0
font_01_sfnt_off0000627e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 19992 bytes
SHA-256: 42ffdb18c7cb2b3fc3c77e5ce9641229877273a7e6425ec90cc32a8d2e039a97

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