PDF malware analysis — malicious · e2f58fe7c9104a4e

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 13:05:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: ba3a69f831c93a870b88665567a43904 SHA-1: aace267c320f0d2f64e9a6a716918dd8538a99fc SHA-256: e2f58fe7c9104a4efef0b2215e069ce71de4e334012a17f15cc9770184136d53

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-daily-free-spins-2021-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/cm-spins_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/robux-xyz_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-only-username_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-real-working_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/can-u-get-free-robux_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
`stream_003_off00004a81.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A81	24856 bytes
SHA-256: `1f59ba17865948818bbc81128614e516d0ae5de79b8adf8816041f4ed97fb529`
`font_01_sfnt_off0000837d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x837D	18708 bytes
SHA-256: `0e09573a858265cfc65c534eb28458a66078312e2bd7bae94317e03ea41fcd19`

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