Malicious PDF — malware analysis report

Static analysis result for SHA-256 976f5e45f2adc51b…

MALICIOUS

PDF

39.5 KB Created: 2021-05-10 20:25:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cb27496c8bcdbcb795d546bfb81364ff SHA-1: 11c4aa4ad314b3cc92a92fb0357d538c3a1eeb24 SHA-256: 976f5e45f2adc51b53de69a35965e7ce2703f1ffd6f7c5c30c013d514250a191
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to known malicious redirectors and game hack lures, designed to trick the user into downloading further malware. The presence of a fake CAPTCHA heuristic indicates the document's intent to deceive users into performing an action, likely clicking the malicious links. The document's structure and embedded links suggest it is part of a phishing campaign to distribute unwanted software or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/kachifpro-game-hack In PDF document text
    • http://oceanos.pl/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/app-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft-toolbox-premium-apk_GM479516143.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_off00004330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4330 23852 bytes
SHA-256: 7b6969ff486b5cb4db7b1c6550a5465f7b30059aadf89eee99c6958e7e731b7e
font_01_sfnt_off0000798c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798C 17784 bytes
SHA-256: f5f16e9fe06415f99f9f196ec79e922628d3dac9c37f6a7894d79eeb781dffd0

Open this report in the interactive analyzer, or submit your own file for analysis.