PDF malware analysis — malicious · e7d85b10225d9cf2

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 20:47:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 1b72390761be00f6742f3178c2cca16b SHA-1: 0048842d01ac6734d2f473bd8e131babce40ecb1 SHA-256: e7d85b10225d9cf24d95ec1b5a499a8dcbbb0ddfcffd473587b4796b21ed6d34

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free Robux' or game hacks to entice users to click on a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF's structure includes external URIs pointing to a suspicious domain. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to redirect users to a site that likely hosts further malicious content or exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-without-verify-game-hack PDF link annotation
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://pelatihsenamjogja.com/ckfinder/userfiles/files/coin-master-cheat-codes_GM406889139.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_off0000302a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x302A	21692 bytes
SHA-256: `23bd6b89a5b8fda44dbeb1b05ad9f9d18c3d215566fe634ae8324fe8af14b2e3`
`font_01_sfnt_off0000600d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x600D	19620 bytes
SHA-256: `8aa86329d0795ab1cad193d913199e82be4c5431cadd1cc96f2f7af8a2f6b0e0`

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