Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e170bcfe2052182…

MALICIOUS

PDF

226.1 KB Created: 2021-07-04 08:32:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b9d253cd7bf5cc339e410ac4c61c1aa3 SHA-1: ac009fbaf1d637245a9693f727d9996ea62424bc SHA-256: 3e170bcfe2052182283186dd6d9606f70711f74f599fba2439ac3095d983a108
250 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs social engineering tactics, including a fake CAPTCHA and a lure for game-related content, to trick the user into clicking a malicious link. This link, http://netcdn.tw/app/1094591345/pokemon-go-free-ticket-game-hack, is associated with known malicious redirector infrastructure. The document's structure and content suggest an attempt to deliver a secondary payload or lead the user to a phishing or malware download site.

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.tw/app/1094591345/pokemon-go-free-ticket-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/free-roblox-shirt-template-download_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/como-hackear-a-gente-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-scp-site-61-admin-cheat_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-hack-someone-on-roblox-without-password_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031cf9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31CF9 25576 bytes
SHA-256: 959b9deccc97f56aadf00dfe29a3012c2008fee4b7fbbfe30bfe0779c3c95ea1
font_01_sfnt_off000358f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358F5 18584 bytes
SHA-256: c616041461c48027fc2fbba502ac8dd20f9cdaa9ea600319b4bca828573b3f83

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