PDF malware analysis — malicious · 7fe0bf8bc3d6a889

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 18:49:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: 6984f8d7d2c0e7a5d3c208c591415a30 SHA-1: 5198a130a7fefa544a0d57158c38d17b5a964b84 SHA-256: 7fe0bf8bc3d6a889e5c93159829bc44c20d1dddc83b663e09afcba86d3745324

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and a link farm, suggesting a lure for users seeking game hacks or free items. The document body, though partially obfuscated, contains references to 'Coin Master Card Hack' and a URL that aligns with the heuristic findings. The presence of numerous links to external PDFs, many with SEO-like titles, indicates an attempt to drive traffic to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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/406889139/coin-master-card-hack-game-hack In PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-hack_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/grabpoints-robux_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
- http://gabrielprogramador.com.br/alfaleiloes/upload/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://coinmasterspinandcoin.comIn 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_003_off00004ba3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BA3	25408 bytes
SHA-256: `eef87c8b502a08f11f145b23ad96c222ab6bb61671010b12e5d5630bb78fbd45`
`font_01_sfnt_off0000850f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x850F	17888 bytes
SHA-256: `5efdab5adc2480a04776318c37b62879fa5095bdd48049ba40adaf7a695a074d`

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