PDF malware analysis — malicious · 7d6430e788fd70c5

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 10:03:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 76a9ed70083cc2c1c5ea5829a9251469 SHA-1: 3d6a4cd37fb44166c64223ebab6c721124745775 SHA-256: 7d6430e788fd70c5f93c1f802d7047f4fa6bb24bf1272f212621cdf0252a240c

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a link farm designed to attract users with deceptive lures. The 'SE_BROWSER_INSTALL_LURE' heuristic further suggests that the document may prompt users to install software or extensions, a common tactic for malware delivery. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9648

Heuristics 6

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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/835599320/tiktok-free-nose-job-game-hack PDF link annotation
- http://www.peterbarsony.com/userfiles/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/fake-robux-codes_GM431946152.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/robux-game-com_GM431946152.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
- http://www.peterbarsony.com/userfiles/files/coin-master-daily-free-spins-and-coins_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_off00004779.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4779	23932 bytes
SHA-256: `319ca32fc980f713e57993c3a74819e106131c34fe46a11e9db153f85e6394b2`
`font_01_sfnt_off00007d91.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D91	3284 bytes
SHA-256: `08634c76f2d2d32d10bcb76440c2f66c9b2439f3e1410f8511f64d9a1303c699`
`font_02_sfnt_off000088df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88DF	17780 bytes
SHA-256: `a3a0c1082306655cd7ae510f8d816e3ad6b71cccf6a920a071e3a0a5a2164155`

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