PDF malware analysis — malicious · 4e8bb4106e1761cf

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 08:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: fb8bb90371654121115b2b53703aba96 SHA-1: bf9bdd905c275ce9158cf613bb6a398c4741ca11 SHA-256: 4e8bb4106e1761cfdf1c7f63e0ffabb686354bee20234ef03640178c6f350cb9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'Free Robux Generator' lure, which is a common tactic for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' directly indicates this malicious intent. While no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a site that hosts further malicious content or exploits.

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/431946152/free-robux-generator-no-survey-game-hack PDF link annotation
- https://www.alarqam.ae/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/tiktok-for-free_GM835599320.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/hack-roblox-boogy_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-roblox-open-groups_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_off00002e87.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E87	22036 bytes
SHA-256: `f18a0418135178ae3eeb996fe44701ea5882f87fffed7bc6668f0191d5ed8a6a`
`font_01_sfnt_off00005f2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F2B	19112 bytes
SHA-256: `33dfcb2d47e73eef9736d676cbbc8a7ec86e5e18ee4675d0e02e08c00d2a765b`

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