PDF malware analysis — malicious · b17fd8ad03ef42fb

MALICIOUS

PDF

47.7 KB Created: 2021-05-12 07:39:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: b34c3cdfce46c7601c330435a0d1bd49 SHA-1: 9961dbf13bd6ef528f845c0e69c475ab7f2a455a SHA-256: b17fd8ad03ef42fb8041c70155e22db8bac4bb5f751ba1747eb5b04d1b9492b5

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for free game currency or hacks, directing users to a malicious redirector. It also presents a fake CAPTCHA or human verification prompt to trick users into interacting further. The embedded URLs are likely part of a phishing or scam campaign designed to lead users to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-2021-no-human-verification-game-hack In PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/free-spin-coin_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
- https://www.e-learning-mis-alhidayah-keblama.com/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00004eaa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EAA	25672 bytes
SHA-256: `9188f30f41b5d6f5a6f04669f6057d424fe059a4b54e881170e8c694d37c95a0`
`font_01_sfnt_off00008ac3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AC3	2872 bytes
SHA-256: `5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207`
`font_02_sfnt_off0000947f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x947F	19428 bytes
SHA-256: `dfc7ca414cfca4f80301273998e01ceb4bfd22e3de883fcbe9d6a0102e8d41a4`

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