PDF malware analysis — malicious · 8a15d8ea38ed7dc3

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 11:44:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 13a81933f4fcc49a744d976334602548 SHA-1: 1778ca3c303c65d627477a278005b42d36778a86 SHA-256: 8a15d8ea38ed7dc38e9cdcba5951eb404d0dc3009c22d51510460d043c6c016c

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/479516143/minecraft-download-free-download-game-hack PDF link annotation
- https://www.thecongostore.com/uploaded_files/userfiles/files/skipe-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-gear-cheat_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-someones-account-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/without-tiktok-free-fire_GM835599320.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-accounts-2021-on-pc_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/cm-daily-spins_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/gain-robux_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-promo-codes-february-2021_GM431946152.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_off00002e2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E2B	21612 bytes
SHA-256: `bff1788da2f59b9c63408f8d3dd6885fb573d6a34bd80cca5b21a776c492d89d`
`font_01_sfnt_off00005d8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D8A	18576 bytes
SHA-256: `40aa17af32215803f1fba4a6734646ab30a634826190d5834ae8dd781bed6596`

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