PDF malware analysis — malicious · 5387af70cd698649

MALICIOUS

PDF

44.1 KB Created: 2021-06-10 23:16:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 9467bd42420f7a0bf737467247eeade5 SHA-1: 43d7ad5f775542526839b90d937e314fd6e32553 SHA-256: 5387af70cd698649f007387f7cf79e690f3a61583515d8dc45d7209e006ac060

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and heuristics indicate a brand-impersonation credential phishing lure, specifically impersonating Amazon. The primary URL, https://netcdn.tw/app/431946152/hack-codes-robux-game-hack, is presented as a 'hack codes' link for a game, suggesting a scam or malware distribution. No scripts were extracted, but the presence of embedded URLs and the phishing lure strongly indicate a malicious intent to deceive the user.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

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.tw/app/431946152/hack-codes-robux-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.tw/app/431946152/hack-codes-robux-game-hack PDF link annotation
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_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/hacks-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/com-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-blogspot_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-no-password-or-human-verification-2021_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_004_off000050d9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50D9	24460 bytes
SHA-256: `2ad2d5ab4c492a6fd3a54646e8006bd2e0b6dcce9d7913855a3f3dda70d6ddfd`
`font_01_sfnt_off00008910.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8910	18420 bytes
SHA-256: `679a0cc559ec9b3b4ee5ce7d6fc6e522afad1fbfd54b3a14e6c72a8d60b59191`

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