PDF malware analysis — malicious · 243cacd447f7b27e

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 17:04:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 5d373b8c794d72cace8b2d9610671d42 SHA-1: 41c98198209b6a6a2131b35227467bc5e10b4234 SHA-256: 243cacd447f7b27e020b7a8ea2178924cdb424f86d3e3c1821b1b155a4ced645

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links designed to lure users into downloading potentially malicious content, impersonating Microsoft. The primary link redirects to infrastructure known for distributing malware. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit users through social engineering, likely leading to further malicious downloads or execution.

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/rbxdemon-game-hack.
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/rbxdemon-game-hack In PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/roblox-studio-free_GM431946152.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-images-free_GM479516143.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.dhs.or.id/new/public/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- http://dhs.or.id/new/public/ckfinder/userfiles/files/free-roblox-clothes-templates_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
`stream_003_off00004c55.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C55	23928 bytes
SHA-256: `47c3f3134237fefdcd48d010ca582ca5da5e9a0d9b33115562e5a36655996f20`
`font_01_sfnt_off000082f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82F8	2892 bytes
SHA-256: `67f647153db633e36994b895b422fd96ed98020f629bcdbdb4ecc95a41ec0bd7`
`font_02_sfnt_off00008cf0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CF0	18144 bytes
SHA-256: `84e994ea3e0766e4b6b44f1efc08852f1b1b6721f581ba32b946cb803bfb180d`

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