PDF malware analysis — malicious · cd630a01f353be7f

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 18:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 49b5aa7bb3aed69366265eeab8a5df8e SHA-1: cee55bc11d9b8aa690a7b70cbe2ebd5eed3c536f SHA-256: cd630a01f353be7f1671bae14a689095b128bbbfed6a14d25224b160b4a9781e

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 0.9971

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/coin-master-hack-version-download-2021-game-hack PDF link annotation
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/blox-best-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coins-master-hacks_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/roblox-demon_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/static-moonactive-net_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/claim-free-spins-coin-master_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_003_off000048e3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48E3	23872 bytes
SHA-256: `e8daed1fbded3ef5277fd19c712f6aa6181f66b736da7a7ec058c7cfabaa503f`
`font_01_sfnt_off00007f09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F09	18832 bytes
SHA-256: `10a49c8f5e0c2228bf8891dcd296cb3cf64f302ec606424858ebb68f2fddb877`

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