PDF malware analysis — malicious · a70efbbcc3111b54

MALICIOUS

PDF

33.6 KB Created: 2021-06-28 05:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 1cd16913e5a8a4bdaffc6c4778b2135b SHA-1: 0af5d64e77bb38ab671804303fc3693da1e76264 SHA-256: a70efbbcc3111b54a0b26841a703d96df3ed23e46055200bccdf2007a2b542bf

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.co/app/431946152/free-roblox-red-shirt-game-hack PDF link annotation
- https://www.nara.org.uk/uploads/files/files/daniel-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-imagine_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-cheat-in-roblox-royale-high_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/can-you-get-banned-for-hacking-in-roblox_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/clients-minecraft_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-eith-no-verifications_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-picture-verification_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/withdraw-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-guest-t-shirt-free_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_off00002e3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E3A	21704 bytes
SHA-256: `e0e0881d2d645004fe22dbe67f86ac3fdfeaf740631832b2c061deeee0f7c285`
`font_01_sfnt_off00005dbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DBF	19216 bytes
SHA-256: `841073171ba96aceaf43123ff6e928e8e7b56a2e0f1aac5230fe1247888bede0`

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