PDF malware analysis — malicious · 7df1f82bfd3a4c9a

MALICIOUS

PDF

46.0 KB Created: 2021-05-13 19:27:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 1561dda05a4230d45da30b7fccd4f758 SHA-1: 0ce36b24a9beb428de2edcc8142672393bfe4884 SHA-256: 7df1f82bfd3a4c9a7119a54b0c304fac8948384ce18750ce7b85021efb45df0d

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links designed to lure users into downloading game hacks or generators. The primary link redirects to a URL associated with game cheats, and the document body contains a large number of links to other PDF files, suggesting a link farm or redirector for malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

Heuristics 5

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.
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/479516143/minecraft-pe-apk-download-game-hack PDF link annotation
- http://www.tamimaudit.com/uploaded_files/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/spin-and-coin_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/real-robux-generator_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
- http://www.tamimaudit.com/uploaded_files/userfiles/files/free-roebucks_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_off00004d87.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D87	24884 bytes
SHA-256: `37242e297bfa968013087aae56e0b4fe4a77cbfb09a44cc7888f52487bd23b16`
`font_01_sfnt_off0000863e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x863E	2824 bytes
SHA-256: `61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b`
`font_02_sfnt_off00008fe5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FE5	18788 bytes
SHA-256: `8791d3cc95b23c4b4e10828445a3a5a1b9cddfea01917aff66a6701f48000f7b`

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