PDF malware analysis — malicious · 0e92c556c9d1685f

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 06:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 5b6629002830406337d0f2ba08fc6836 SHA-1: 5b4182b23ca0a527c5b51c6967b4244edb02e786 SHA-256: 0e92c556c9d1685f9b9a94c0a99d1ec41130b830b8070ef96e1b73fd694b6061

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious domain, masquerading as free game hacks or generators. The document body and heuristics indicate a lure for users to click these links, which likely leads to phishing or malware download. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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.
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/free-roblox-hack-game-hack In PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/www-robux-redeem_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
- https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.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
`stream_003_off00004979.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4979	24364 bytes
SHA-256: `6aba4c124ab1ddb6b8f6fb77228fbce73dd55d28a938dcb9a8625dd6b5ae2705`
`font_01_sfnt_off00008173.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8173	2824 bytes
SHA-256: `94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4`
`font_02_sfnt_off00008b21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B21	18344 bytes
SHA-256: `9d921b2eee93f33e2efc5c53c848117e08d630d06cf868d7193b51dd4894dd93`

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