PDF malware analysis — malicious · 5aa218a56a91fe22

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 18:47:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 1cb6d0be87eee657f825478291a45552 SHA-1: 6d779f722a1073bee49c6c6a07cca7f5cc36cd9a SHA-256: 5aa218a56a91fe22b3be9080495f069dc91cd65099ff2920dc50ba1c58b7cfe7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that are designed to lure users into clicking on them by promising game hacks and unlimited in-game currency. The primary link, https://netcdn.xyz/app/406889139/coin-master-unlimited-spin-and-coin-hack-game-hack, is flagged as a game hack redirector. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and the same malicious URL, indicating it was likely generated programmatically to host these lures. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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-unlimited-spin-and-coin-hack-game-hack PDF link annotation
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/robux-today_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-coins-coin-master-link-2021_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_off00004c6f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C6F	25248 bytes
SHA-256: `d24908a056754e83851aaeaf6b5027b8e4e5bb7365d7608cbdfbae20226bf051`
`font_01_sfnt_off000085c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85C2	18584 bytes
SHA-256: `c8e711e41b973747ec323a47a761701fdaf1f8f6730ed7788ccf1517fe3358ad`

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