PDF malware analysis — malicious · 0cb49739d682e1ad

MALICIOUS

PDF

45.6 KB Created: 2021-06-08 14:13:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: bee029255cbb9de9fcf425112334f81b SHA-1: 0052ce7e1fb17ce01bb6cff457900f47c7879fa5 SHA-256: 0cb49739d682e1adeb8d7781c3ef7489d9eac26cd4aae25b5b51416a331d5e0a

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-robux-in-roblox-2021-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-gui-download_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-sexually_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-card_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-more-robux_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_off00005371.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5371	25416 bytes
SHA-256: `5f1311d8947b7bde878bf5a2dc846b6bae0e563890a0bc2c5571a98d6e1dadeb`
`font_01_sfnt_off00008d7a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D7A	18888 bytes
SHA-256: `29c14bd61725027bc6b352996b045cd6e2df0fb1c0843e8f27f74f6005c5ce9a`

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