Malicious PDF — malware analysis report

Static analysis result for SHA-256 80262c9ca48c8b59…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 09:59:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 96b2a0ff6c3db8ed4fd99076b01a2e96 SHA-1: 487da0c50127617f2d0716c6667b5e3cbad71300 SHA-256: 80262c9ca48c8b59f89cc5f1f23c47d90967607083e3240750749be9e4604016
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'hacked Roblox accounts' and 'game hacks'. The primary link directs to 'https://netcdn.online/app/431946152/hacked-roblox-accounts-list-game-hack', which is flagged as a malicious redirector. This suggests the document's purpose is to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/431946152/hacked-roblox-accounts-list-game-hack In PDF document text
    • https://dentmate.com.tw/image/data/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000507a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x507A 26916 bytes
SHA-256: b4a3706fdd89b0ec05eefb8c1d3a66cc2a7a43892ff83e9cf68acc2ff01a8ebd
font_01_sfnt_off00008de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE9 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off00009a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A71 18720 bytes
SHA-256: 4364cdcc1b4e431b6a7cfc51a44ccbde59c7a972961f4ddbd0871ac7a20bc545

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