Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba587168f4551df…

MALICIOUS

PDF

227.1 KB Created: 2021-07-05 04:45:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b18e99c2888747d03f83039b8978d0f0 SHA-1: a9dd3176becab387e101ffd739a5658ed52c8bfa SHA-256: 3ba587168f4551dffddb990df35361d852062f3993a3287445626c97efbc2328
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link to a 'game hack' generator, which is a common lure for social engineering. It also displays a fake CAPTCHA or human verification prompt to trick users into clicking the link. The embedded URL is likely intended to download a second-stage payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 7

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/1094591345/pokemon-go-free-items-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-online-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/idenity-fraud-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-roblox-treasure-hunt-simulator-get-rebirth_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-coding-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-xrad-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-paid-hacks_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-exclusive-virtual-item-codes-roblox_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
stream_023_off00032157.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32157 25576 bytes
SHA-256: 9b0936dc5ec98b31dc0cba0e56fa09588a7d693ae5d9da7471bd63a318cf8b1c
font_01_sfnt_off00035d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D5F 18460 bytes
SHA-256: ccc1d56019b69059762027b73dc815af03cc1bb29b408b5acbafbe7dfe9be127

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