Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2987b9608dfd03…

MALICIOUS

PDF

34.4 KB Created: 2021-07-09 05:52:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fa38409c300c19eac224dd59cb712ff4 SHA-1: 311438d7a067866f115b481fea1091c97d6e184c SHA-256: 0c2987b9608dfd037fda3373f08e48693352dbb0ae06ab13aba8237caa8ded10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which in turn serves further PDF lures hosted on 'samavetpharm.com'. The document body and embedded URLs indicate a clear intent to lead users to potentially malicious content, likely for credential harvesting or malware delivery.

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.tw/app/406889139/coin-master-hack-no-root-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-free-magma-fiend_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-free-robux_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/blox-pink-robux-free_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_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 22932 bytes
SHA-256: 5dd4da47f40d59d5a2fd86b92ecf30db17f2248a222486fce8f6a0bd278c94ab
font_01_sfnt_off00006498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6498 18004 bytes
SHA-256: 549beb99202183260cec546d87202bf9f33ec82d563d99b2488d726b36bc9bd3

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