PDF malware analysis — malicious · 74b170b03afd2fbf

MALICIOUS

PDF

44.3 KB Created: 2021-06-02 16:06:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 48b6ebf31bf8f50b60ccdfac6110ba42 SHA-1: 401218e551aef3d6728f02a5f0ce906a348578e5 SHA-256: 74b170b03afd2fbf57cfd6f1767b623a2731760d990ca251890bd05dc8908b93

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/cheat-argent-deathrun-roblox-game-hack PDF link annotation
- https://zarco.co.in/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/collect-robux_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://zarco.co.in/uploaded_files/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.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_off0000522e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x522E	23964 bytes
SHA-256: `9d30a3e2918e7367b11502849afaa85365eb66316c4bfabeb31948c1ea98c772`
`font_01_sfnt_off00008879.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8879	18880 bytes
SHA-256: `b802dc14b4bc2943b210a2618640c717bb7cce563f836e8d3ec1cd8ce364f5f2`

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