PDF malware analysis — malicious · b5a63a20163e9a23

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 21:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 96a2ece48307b10a1bbffaa36e7e5cbd SHA-1: 65dc398ab85f45b519973814b8ec9f0bb30cf978 SHA-256: b5a63a20163e9a2321c95b21214e38fbef230232af44a35cd40a40022a2e6f62

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/406889139/coin-master-daily-free-spins-link-game-hack PDF link annotation
- https://privatearrangements.co.nz/public/files/kachifpro_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/coin-master-free-food_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/how-to-hack-roblox-accounts-inspecting_GM431946152.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/piano-cheating-hack-roblox_GM431946152.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/roblox-demon_GM431946152.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://privatearrangements.co.nz/public/files/free-robuxdill_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_002_off00002fe5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FE5	22560 bytes
SHA-256: `e37f5b667efe8fc77e6781dffed5e4d6919a03aadd3025436558858a74a406e0`
`font_01_sfnt_off00006237.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6237	18768 bytes
SHA-256: `989ac8744b1238afa99b88b7bb3fb2df9d299a986309a52cf516f5921eb03fc0`

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