PDF malware analysis — malicious · 638068e11aeecb73

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 03:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 19e784d4b132aebf65e0090ceefe3db4 SHA-1: aff4221344f1e4f4c6b97c6f641b704481397f52 SHA-256: 638068e11aeecb7336fe78b40d61073218aaa52d9ea34e1b2f46a7426db5ece7

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 0.9980

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 http://netcdn.tw/app/431946152/free-robux-real-working-game-hack PDF link annotation
- http://africanearthgroup.com/uploads/files/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/free-tiktok-views_GM835599320.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/roblox-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/roblox-bc-free-account_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/roblox-hack-synapse-x-free-download_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/free-robux-and-tix-generator-no-survey_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/roblox-titan-simulator-hack_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- http://www.africanearthgroup.com/uploads/files/files/free-robux-generator-with-color-verification-2021_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/floating-hack-in-roblox-star-wars-first-order_GM431946152.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://africanearthgroup.com/uploads/files/files/free-to-play-minecraft-servers_GM479516143.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
`font_00_sfnt_off00003012.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3012	22128 bytes
SHA-256: `5c9350a05987d9ff7dfdc8689c1272b01be5b4ae5a531d52a805e89c8bbce099`
`font_01_sfnt_off000060e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60E2	19280 bytes
SHA-256: `9945ffa193253d154cbce2906461b0c2a302f27e13cc5dbaefc5af262476b8d2`

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