Malicious PDF — malware analysis report

Static analysis result for SHA-256 84627ce25acad316…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 21:48:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 968a229c1cd0adb549e96ece595cad1a SHA-1: 7153e071241168f119b1c1af4db4f8e076f1626b SHA-256: 84627ce25acad316a118c9f0e5714933827bbf423156077deda5a68d1c8bc56d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to entice users into clicking embedded links. These links redirect to known malicious infrastructure, specifically a URL associated with a 'free generator' or 'game hack' scam. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious workflow designed to lead users to potentially harmful content or further compromise.

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/free-promo-codes-roblox-robux-game-hack In PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/hack-para-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/roblox-how-to-get-free-membership_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/roblox-site-hacked_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/robux-hack-deutsch-youtube_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/robux-come_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-obc-in-roblox-within-30-mins_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-sin-verificacion-humana_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_off000031f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F7 22472 bytes
SHA-256: 03f0b022e1b42a0baef763207811a2f60a7457364789be9ae17022a43f74f4da
font_01_sfnt_off000063be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 19380 bytes
SHA-256: 210a44cb2cd5dfd1789b7d5297e6ed75b0d7e63ce4b111d366cd1cd2edbf9a29

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