PDF malware analysis — malicious · a803de344f15178c

MALICIOUS

PDF

53.0 KB Created: 2021-06-03 05:56:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: c6bfdcce495a79446040b1e1c6138868 SHA-1: d82d0894bb2d3ae940df69de85b48fc6efc00390 SHA-256: a803de344f15178c642d86c6b20aff2608e19f2a83a0b9ca080d2340930a6c2a

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 0.9856

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.online/app/431946152/oprewards-robux-game-hack PDF link annotation
- http://rollipolli.hu/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-roblox-intros_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/daily-spin_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/3-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/google-roblox-games_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
- http://rollipolli.hu/userfiles/files/coin-master-free-cards-hack_GM406889139.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_off000050f9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50F9	41628 bytes
SHA-256: `3cfe21cdeaf2293fe3214b6f2d4973c71e8a03161c3da04ed2ffa1ad94639ba3`
`font_01_sfnt_off0000ac38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAC38	18592 bytes
SHA-256: `7d6f50a950363cb67ce8ae8db88bc038f2e04ece5b1cd119157d21c4c1c9bd15`

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