Malicious PDF — malware analysis report

Static analysis result for SHA-256 97230c2a2d8fb6ca…

MALICIOUS

PDF

43.9 KB Created: 2021-05-13 23:17:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 62b4ae4fc71b9a70a8e29025d155e6a5 SHA-1: a89cfb103106dd4829f6d5b5002f823472a4a4f2 SHA-256: 97230c2a2d8fb6ca0d77640ff55780fe5184e3b35eb7c03d208b7229ef122470
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures for game hacks, suggesting a phishing or malware distribution attempt. The presence of a remote support tool lure further indicates a potential social engineering attack aimed at gaining unauthorized access or control. No scripts were extracted, but the embedded links are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/simplysarc-game-hack In PDF document text
    • http://www.mikramarine.gr/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://www.mikramarine.gr/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.mikramarine.gr/images/coin-master-hack-tool-india_GM406889139.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
stream_003_off00004661.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4661 24988 bytes
SHA-256: 1114b7c94382d675d5d20e4e2fea8c3b1e3f98710db0adb92c78e988dd3f201a
font_01_sfnt_off00007f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 3012 bytes
SHA-256: ea730caf108ebad3375e06643ac09f96113c7f497f8970db1c262632c2ba43d7
font_02_sfnt_off00008998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8998 18156 bytes
SHA-256: d1e3c8cc46daa8b4e8a3620fd036fa3afc0951971ec214e12238e772f71f3550

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