PDF malware analysis — malicious · ef7196511e8fd5b2

MALICIOUS

PDF

45.8 KB Created: 2021-05-16 21:18:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e0cfecb195b8961f02977d0ea41edba4 SHA-1: e900df50a91a124ce1d3479a95cbf816ef5b7321 SHA-256: ef7196511e8fd5b2ff8b69d825a5dc4324c9e2de565fe218ac41a8101ccb9f2c

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 0.9432

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/406889139/free-hacks-for-coin-master-game-hack PDF link annotation
- http://www.sovtigaz.ru/f/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-robux-site_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/roblox-trolling_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-roblox-characters_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/coin-master-hack-blog_GM406889139.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.sovtigaz.ru/f/files/150-free-spins-coin-master_GM406889139.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_off00004d5d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D5D	25252 bytes
SHA-256: `f4ad295c1ffd4ee811b852d279ab93a2793d73728a297138dc024f437c00f57c`
`font_01_sfnt_off000087c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87C4	2920 bytes
SHA-256: `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`
`font_02_sfnt_off000091de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91DE	17880 bytes
SHA-256: `2beebd07a7bf3792acdee249f7a2a83ed44f2fe9f2bfb57386b991bf1122f076`

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