PDF malware analysis — malicious · f835a0b3119d842d

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 17:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1cf888c2369e04a8157ff2996ffcde26 SHA-1: dededa7a9b098ad3d40efb6078f0b0cb55986985 SHA-256: f835a0b3119d842db005c35de62f6b2c5aa3fb92afa53c52fcef9b4026bd3d98

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/406889139/get-free-spins-in-coin-master-game-hack PDF link annotation
- http://www.businessgalaxy.lk/files/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/can-you-get-banned-on-roblox-for-using-cheat-engine_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/roblox-cheat-elemental-battleground_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-robux-co_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-hack-a-piano-in-roblox_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/code-for-roblox-robux-hack_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_off0000320b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x320B	22880 bytes
SHA-256: `7b77cb046f546b959c60f7ea1cdce323a39fc6068addc03b4a57d594f68c024f`
`font_01_sfnt_off00006538.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6538	18176 bytes
SHA-256: `40bd2a423e8c3e22f2455c3bf096c64e087039c583c2df40abec99adf6858c95`

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