PDF malware analysis — malicious · 791bdc34ada9226e

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 06:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: d4483619a35f66820be11f9751cb2e51 SHA-1: 44a4bf9a277c9f00218da3d3642198598c94b3d5 SHA-256: 791bdc34ada9226e92568ebf6aee332469ef0f30acfd651b3903a44364361376

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to a known malicious redirector, specifically http://netcdn.co/app/431946152/free-robux-sin-verificacion-humana-game-hack, which is presented as a lure for free game hacks. The document body and heuristics indicate a deceptive workflow designed to trick users into visiting potentially harmful sites. The presence of 'cmd_GM431946152.pdf' in the document text suggests an attempt to disguise malicious commands or links.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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
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.co/app/431946152/free-robux-sin-verificacion-humana-game-hack In PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-hack-one-punch-man-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/hacks-de-velocidad-para-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/roblox-command-cheats_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-hack-roblox-nopde-engine_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-no-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/wings-image-roblox-free_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/como-hackear-roblox-con-cmd_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-robux-bypass-survey_GM431946152.pdfIn macro / runtime command snippet
- https://www.iseas.com/uploaded_files/userfiles/files/eviction-notice-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/useIn macro / runtime command snippet
- 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
`font_00_sfnt_off0000326e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x326E	21724 bytes
SHA-256: `c5e81e4689e7dabd29f90959e42be9c1efcfdc7418095d87a8c251754b92f155`
`font_01_sfnt_off00006229.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6229	19228 bytes
SHA-256: `bae6b292007a5cffc85d97989edd4bba770d81c5722e707d4c2c8d3cd94718b8`

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