Malicious PDF — malware analysis report

Static analysis result for SHA-256 764ab73003012335…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 13:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: bb3f154d6090b2603191abbe5beb611d SHA-1: 2a39d6f8d3222bce738c723350560fd1d6317d5f SHA-256: 764ab7300301233526a4fdf53cba5fae3cca6b3ff225a9030108a5061e891c24
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains links to a malicious redirector disguised as a 'free generator / game hack' lure, and displays a fake CAPTCHA to trick users into clicking. The embedded links likely lead to further malicious content or exploit kits. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful websites.

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/479516143/free-minecraft-servers-to-join-game-hack In PDF document text
    • http://ce-tsv-nantes.fr/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/robloxhacks_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://ce-tsv-nantes.fr/images/how-to-hack-roblox-accounts-for-robux_GM431946152.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_off000046ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46EC 24924 bytes
SHA-256: f2830cf2a7dd60bfadc3d62820b44dd216f08a575d481f68ce0c675b749b2fdc
font_01_sfnt_off00007fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD6 17992 bytes
SHA-256: f4dddb1eb99788babbc28e2933b16aea696a65c0930c8e69ff3f00d50dcb50ca

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