PDF malware analysis — malicious · 4af62767f9fe5d68

MALICIOUS

PDF

46.2 KB Created: 2021-06-07 07:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2f73c04f659026609ff4de61901fc3fd SHA-1: 3d5c295aa25af7bdba1dffd0dc1962a67718cff5 SHA-256: 4af62767f9fe5d68eeb89e78802710aabc2c17c1aab09925f8d08ab1a63ab49c

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 0.9864

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.tw/app/431946152/how-to-hack-destruction-simulator-roblox-game-hack PDF link annotation
- https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/cpbildco-robux_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/google-roblox-games_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/roblox-hacks-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_off000051a2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51A2	27052 bytes
SHA-256: `e256bcec354bf64f5b41564372d1bfc6ad0ae2c059527cab66e5ea4f74c64390`
`font_01_sfnt_off00008fa8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FA8	19140 bytes
SHA-256: `ea1b6487e3baff2460a21d12809d12cf98977644ff3bbfdea5dc354582ba078e`

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