PDF malware analysis — malicious · 871b502a5adc8c29

MALICIOUS

PDF

34.5 KB Created: 2021-07-10 02:02:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9fd2a77ed5cb4a47c84a7e6fd0961d83 SHA-1: 921072f5a611671ce2ae2a427ef62233058bab02 SHA-256: 871b502a5adc8c29cdcde22fff6edba8fd32c0e3ce829bf01a9ee895015b15fa

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/minecraft-free-download-pc-game-hack PDF link annotation
- https://amozeshportal.ir/assets/uploads/pages/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-a-free-knive-in-roblox-cbro_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/add-to-roblox-free-gear_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-images_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/pastebin-com-free-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-on-android-phone_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-hack-roblox-ac-counts_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-without-downloading-apps_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
`font_00_sfnt_off0000321d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x321D	22124 bytes
SHA-256: `629b503593b066da042c2d6653d8d41755b9cf3d4b9a83ec9446145622cef55c`
`font_01_sfnt_off000062ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62ED	18732 bytes
SHA-256: `3ac75ef97daccb8031c4699bb66bbcd8083c0bd9fa73e8cf0728fdae55550a57`

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