PDF malware analysis — malicious · c5e69dde8ff431b2

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 22:07:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 3d2f12c1f54e09a0b878aa4244088437 SHA-1: a662933e9d40c5aa5f142d4bc0570906c42c677d SHA-256: c5e69dde8ff431b2ac4aa932c631a481e1d5382a2d178170f5413de24872dae2

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, identified as a link farm, directing users to pages that promise game hacks and free in-app purchases. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a 'download button' lure further supports a malicious intent. While no scripts were explicitly extracted, the structure and content suggest a phishing or scam attempt, likely initiated via spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.
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/406889139/coin-master-free-in-app-purchases-jailbreak-game-hack PDF link annotation
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-box_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-tips_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/ways-to-get-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
`stream_003_off00004900.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4900	24024 bytes
SHA-256: `18bdb44be7a568c86e4d792107dd03627d503efd2608a317dfc9c252e6ccec4a`
`font_01_sfnt_off00007fea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FEA	18916 bytes
SHA-256: `8933575a33c081043758051cef204ca959f7c28e21d7d6e787666dcf3915d8b7`

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