PDF malware analysis — malicious · e90238be2885d1a5

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 07:26:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: cf1a32b454c1482e694ea4b3b7910b0c SHA-1: 3974a72b61b07dc42028b90633dba987f3178777 SHA-256: e90238be2885d1a5d3d0f4ec62ca7851645d75ef62cae8a7fa61c71507b22f58

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/how-to-free-robux-codes-game-hack. The document body and heuristics indicate a lure for game hacks and generators, consistent with phishing or scam tactics. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-free-robux-codes-game-hack In PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-ss-excutor_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-with-commands-hack_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/pubg-uc-seagm_GM1330123889.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/what-roblox-games-has-no-cheating_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-codes-for-vehicle-simulator_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-hack-download_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.

Filename	Kind	Source	Size
`font_00_sfnt_off000032ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32FF	22796 bytes
SHA-256: `1422fa57138e1c95c30af73825bdb5802a350f8a895f58f82d9898c2c9a45ac4`
`font_01_sfnt_off000065fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65FE	19056 bytes
SHA-256: `8eca63da2566501ed21a46c722f7bb3544130afe68ac86ef07e9119c1a94e38c`

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