PDF malware analysis — malicious · 5ac6ee8358fc62bb

MALICIOUS

PDF

36.8 KB Created: 2021-07-03 13:07:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: a61e68e407bf882b939b8d5c6305036c SHA-1: f9ac2a6db9279db51185df7a347705d811743e73 SHA-256: 5ac6ee8358fc62bbeeaeae9ae27a85174d2c11d1b3e3d7cc316f9a066984655e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game hacks and currency generators. The heuristic firings confirm these links lead to known malicious redirectors and lure users with game-related content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/406889139/free-appsfor-coin-master-daily-rewards-game-hack In PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/wall-hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/download-hack-roblox-2021-fr_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-gamepasse-roblox_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-roblox-codes-that-work_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/is-tiktok-free-to-use_GM835599320.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-hack-1000000-robux_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
- http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying-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_002_off000035d1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x35D1	23540 bytes
SHA-256: `428d4944fc47d864f517fa630e5950438f0f6526c2867117f6cc30eb4ebe6a04`
`font_01_sfnt_off00006b45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B45	18932 bytes
SHA-256: `23f2122d1e025a40a200fe5bf9e157b0cd475f9e07a39137d42bc2e355502eb2`

Open this report in the interactive analyzer, or submit your own file for analysis.