PDF malware analysis — malicious · 457834b6c7fb6357

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 16:39:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: aae81b52b71323a08aaffe40c1832ddd SHA-1: 4c256e1d9415909c5cc11b03d224ddb29b8a9b32 SHA-256: 457834b6c7fb63572c4401496c9ca3208a2691bf801e5afd58c71d95a78b4fc6

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this lure, directing users to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious, suggesting it's designed to trick users into clicking malicious links.

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.tw/app/479516143/free-games-like-minecraft-game-hack PDF link annotation
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-kazok_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-hack-tool-download-fee_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-get-free-roblox-game-card-codes_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-hack-roblox-crimnal-vs-swat_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/tiktok-free-comments_GM835599320.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/angel-wings-roblox-free_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-hack-apk-no-survey_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_off000030b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30B0	21868 bytes
SHA-256: `11502de72624557c9b6faa41cdee920c966c2c46478de4fbd129be3939d23f62`
`font_01_sfnt_off0000605c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x605C	18288 bytes
SHA-256: `c5afde6118f97a24b097830618cd2378ca81f41e77fa2f8a16f9c5b84109a368`

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