PDF malware analysis — malicious · 7b0486aa7e85fb50

MALICIOUS

PDF

41.5 KB Created: 2021-05-10 14:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: a13a33a8cd0b0c6d319779faf2ac92c4 SHA-1: c83c6cce47ff9a9acd79dfd46ba12c44900c48da SHA-256: 7b0486aa7e85fb50caa18b7c611ceed507afa41d5845c0e953584d8af563a74a

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and a prominent external URI pointing to sites offering game hacks and free spins, indicating a lure for potentially unwanted applications or scams. The presence of a visual download button and a callback lure further supports a malicious intent to deceive users into downloading or interacting with harmful content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 4

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 https://netcdn.xyz/app/406889139/legitimate-coin-master-free-spins-apk-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/where-can-i-get-free-spins-for-coin-master_GM406889139.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/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-quiz_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_off0000410c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x410C	29576 bytes
SHA-256: `fd7a317e7ac4b1751d9320baafea9c68843c9358498076a816a282c963870076`
`font_01_sfnt_off00007f5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F5D	18604 bytes
SHA-256: `744d2d183457972f47b0db91107cea2f4bf33f1c8b8b46bcb558057de1b31a04`

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