PDF malware analysis — malicious · 1700105b78d11904

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 18:16:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7f293502aedfdd0b2641a858dc79219f SHA-1: 35abd4ae45221103fddee587d558e66f4d440ec3 SHA-256: 1700105b78d119044f0c1fd77eb6086c4bda8e65ec36f5395bc5caa83f4b1b51

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 0.9769

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/robloxhacks-game-hack PDF link annotation
- https://www.talakeel.com/uploaded_files/userfiles/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/pubg-uc-yatrma-sitesi_GM1330123889.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
- https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-bonus_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_004_off00004fe7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FE7	26960 bytes
SHA-256: `937611e54f6e0e88194107e9a01e6b35d05388ad336bc11672b33b310ccadb4d`
`font_01_sfnt_off00008ce4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CE4	2880 bytes
SHA-256: `106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081`
`font_02_sfnt_off000096d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96D5	18348 bytes
SHA-256: `4c82b5acf2344fb6074e769b7bb8f458d53ebd76102ce4f277dd7245c06f6447`

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