Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a09fe97b1e13f8a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 11:55:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: dc715b90e98d65a1fd97d96c610901af SHA-1: 0bd301433be1f2b6a249ea1b43671c78d1d730d6 SHA-256: 8a09fe97b1e13f8a7ef6a85b6996a2cb05152e1e12bdb7e8ecb22413c7ec35a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure is a link to 'how-to-hack-on-roblox-in-3-game-hack', which is identified as a malicious redirector. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/431946152/how-to-hack-on-roblox-in-3-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-promo-codes-for-wing-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/regex-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/one-piece-millenium-roblox-found-a-hacki-book_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/bst-way-for-free-robux-no_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-codes-2021-online_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-cards-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/tiktok-free-views-website_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/huskybuscom-free-robux_GM431946152.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
font_00_sfnt_off00003351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3351 21976 bytes
SHA-256: d3c7b8c704b98dc33814f5d81a2d96a414a57210a327d230871b1184bccefa56
font_01_sfnt_off000063ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EF 18996 bytes
SHA-256: d3816181f12e389378b1bc903e5e52b7028671398058ce538933e99f743828bd

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