PDF malware analysis — malicious · 620d2018062543cf

MALICIOUS

PDF

48.8 KB Created: 2021-05-19 00:32:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 0b07e3a299effd41b2930c4cd3879db7 SHA-1: 35a72d16e5f9b5ea0d95f89e042b51482970f3c4 SHA-256: 620d2018062543cfc103ab4aa230e59abfc7c2678097493b82407f71bc96bdc6

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to 'free Robux generators' and 'game hacks', indicating a social engineering attempt to trick users into visiting malicious sites. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs suggest a phishing or malware distribution vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9228

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 https://netcdn.xyz/app/431946152/free-robux-generator-2021-no-human-verification-or-survey-game-hack PDF link annotation
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/master-game_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_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_off00004e68.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E68	28140 bytes
SHA-256: `ae74f2ebcb44813a29f34fe038214d5ff1981e27460f2ef99676e5e901fa0ecb`
`font_01_sfnt_off00008eac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EAC	2872 bytes
SHA-256: `5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207`
`font_02_sfnt_off00009867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9867	19556 bytes
SHA-256: `76adbda1d3e57e3064df3e292cf485a94c26c1a96e5d3a4e3c484cd1a4e129d0`

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