PDF malware analysis — malicious · ab19afd4b4e77ab0

MALICIOUS

PDF

43.2 KB Created: 2021-05-10 23:12:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 792c2bf022ff5a1b67531b3cfc6558ec SHA-1: dbcdac2fb6dbec4140778acbb7f68fef3a77475c SHA-256: ab19afd4b4e77ab029fbd443939c321bbedeae4081ca730f6b83a5ae893e25c7

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to earning in-game currency (Robux) and includes an embedded URL pointing to a suspicious domain. The presence of a "download button" heuristic and the ML classifier flagging the PDF as malicious strongly suggest a malicious intent to redirect users to a potentially harmful site. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/431946152/how-do-you-earn-robux-game-hack PDF link annotation
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.dmgroupksa.com/uploaded_files/userfiles/files/minecraft-realms-free_GM479516143.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_off00004d8b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D8B	24380 bytes
SHA-256: `c9d0d6733b87788c7070bb45bd01e2755da5b322e439f71f1cd4f3e15b36117a`
`font_01_sfnt_off0000857b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x857B	18572 bytes
SHA-256: `e3c39348616a862d1a4c3c977e1db6a410321f9044090df5d7e5825d2676aacb`

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