Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a39b168c5e12b2…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 06:22:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b28b2f38e70d50c7214e8f1e78a0f9be SHA-1: 6a390fc34b727cd2e858218842b48b3041a2ba1f SHA-256: e0a39b168c5e12b25d95e04055dec67821fc3025fd1d6ba7ebca5138285cccee
220 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, masquerading as 'free generators' or 'game hacks'. The presence of a fake CAPTCHA heuristic indicates the document attempts to trick users into interacting with these links, likely to download further malware or engage in phishing. The document's structure and embedded links suggest it is a lure for potentially unwanted applications or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.co/app/431946152/running-free-robux-game-hack In PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/best-free-vip-server-game-roblox_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/getrobux-come_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/daily-coin-master-spins_GM406889139.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_off000033fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FB 22136 bytes
SHA-256: 04780b56d586269a08884a53d4e0adc6c7a43f6cd082bce28c230fdc22be3c40
font_01_sfnt_off00006516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 18836 bytes
SHA-256: 604c037f35b31cae5fc42f438208f5cd01321a6a9e6088d80f2a1548b7cf371b

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