Malicious PDF — malware analysis report

Static analysis result for SHA-256 651fc70a294102b6…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 17:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f2a225dffe9ca3603a4a7ad17815298c SHA-1: 0991bf1d78b96e39c5d70eebd05432f586ef0c98 SHA-256: 651fc70a294102b6a34de9f343ebd6aecb089fede508fd68900a38bf7caf1730
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, masquerading as a "Coin Master Hack Download". The document body and embedded URLs suggest a lure for game-related cheats or hacks, which is a common social engineering tactic. The presence of embedded URLs and the nature of the lure strongly indicate a phishing or scam attempt, likely leading to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-download-2021-game-hack In PDF document text
    • http://fred.com.ua/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FF 24816 bytes
SHA-256: 386b9dc45841c268b54c74d7274121dcdf2b3647905f36af1fa1d36fe57eee81
font_01_sfnt_off0000823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 18696 bytes
SHA-256: 8be69e5611b2f1b9a2f3a77307bfff4bdbd54e1b1e6fe005490b405b0e560c9f

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