PDF malware analysis — malicious · 35e5ee2d5cb97e80

MALICIOUS

PDF

58.1 KB Created: 2021-05-14 18:32:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f29664b982eb66b6edbd34994982377e SHA-1: 4c35781194eec1cd4c0b724f259207491a332475 SHA-256: 35e5ee2d5cb97e809ee39733cfe5dfc52980e50dfea4c61225ab6d0dd13a0667

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and redirects to malicious URLs, indicating a phishing or social engineering attack. The presence of embedded URLs and the ML classifier's high confidence score support this assessment. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

Nyx PDF Classifier malicious score 0.8541

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/406889139/coin-master-ios-hack-download-game-hack PDF link annotation
- https://tuidonghe.vn/public/upload/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/static-moonactive_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004ec3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4EC3	29360 bytes
SHA-256: `b0cae037e36a0dddd931731fee0cdefb19d38b2756130cc33ea828b51285117b`
`font_01_sfnt_off0000946a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x946A	3088 bytes
SHA-256: `e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222`
`font_02_sfnt_off00009f35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F35	7960 bytes
SHA-256: `cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2`
`font_03_sfnt_off0000b25a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB25A	18296 bytes
SHA-256: `3a29b4d49c4689b3fed86d6dd7d7394cd0d46f52f4bf8aca92fb45191e1be305`
`font_04_sfnt_off0000d487.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD487	4272 bytes
SHA-256: `fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0`

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