Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a134ea84563450…

MALICIOUS

PDF

228.5 KB Created: 2021-06-21 15:21:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cd6d18d3b1f20a9c5b403ee1f3c81dcf SHA-1: 213937802fbae7fc940dd61fda19d9c7ad5892a9 SHA-256: 91a134ea84563450deb82cc680fa27d02946807f1329a8104979d0486fa5ac9a
250 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF document employs social engineering tactics, presenting a fake CAPTCHA and a 'free generator' lure to trick users into clicking malicious links. The embedded URL http://netcdn.co/app/1094591345/pokemon-go-hack-free-download-ios-game-hack is identified as a known malicious redirector. The document also contains multiple other links to similar game-related lures, suggesting a common pattern of distributing potentially unwanted or malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 7

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/1094591345/pokemon-go-hack-free-download-ios-game-hack In PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-no-apps-needed_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_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_off00032569.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32569 25576 bytes
SHA-256: 516ce916c3f7bc50b539481d058a1bb9741ebc836ff8e860ea7102f936be958a
font_01_sfnt_off00036167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36167 18940 bytes
SHA-256: d4f0f48febb598938ea2f876fd3bc3e25c29f6b947ff61c1248c7b6d470b10c8

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