PDF malware analysis — malicious · 0916faa36ae3e3eb

MALICIOUS

PDF

48.5 KB Created: 2021-05-13 09:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: b889f0b95c1f436044fd607aed381f05 SHA-1: 8ceb80ebf2135c209f88aea3361d5c4eb86e272f SHA-256: 0916faa36ae3e3eb8c5cc7ced3148463f898f5b61f281c6312dc4d605d142518

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 0.9013

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/431946152/roblox-hair-for-free-game-hack PDF link annotation
- http://stomatoloska-ordinacija-rijeka.com/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-download_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c2d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C2D	28992 bytes
SHA-256: `23fe373bdf64af54429f63cdb6fb5cc3f64aa35c783e4434aef4e0e0bf520a32`
`font_01_sfnt_off00008e1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E1A	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009b2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B2C	18296 bytes
SHA-256: `071abe11bc505b6fd5896db9ed6c4248165c6521bf389675a89e7515009c04ca`

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