PDF malware analysis — malicious · 3a9b0fef47d04275

MALICIOUS

PDF

47.4 KB Created: 2021-05-16 20:04:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: ff288b3ea3bdfff96d52490ac7aea729 SHA-1: 1543f6ad17944ac9ae2861d8393ae8df2a52ed65 SHA-256: 3a9b0fef47d042753531901ba68f4e8b5ebbe348d2691147ea1898f36186f16e

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 0.9013

Heuristics 5

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.
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/roblox-arsenal-hacks-download-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
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/roblox-arsenal-hacks-download-game-hack PDF link annotation
- https://www.soil2soul.ae/uploaded_files/userfiles/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-bobux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-support_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_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_off00004c1e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C1E	27164 bytes
SHA-256: `57be04ee26acd810e4f370b5909a6e9de2fbaff8614827fbe3ace588c2dea64d`
`font_01_sfnt_off00008b7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B7D	2872 bytes
SHA-256: `5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207`
`font_02_sfnt_off00009539.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9539	18688 bytes
SHA-256: `3194e743087210276cc8ef30afa20718d77c17967e4a232ddce90cfa751f40c3`

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