PDF malware analysis — malicious · 4fbd1b3fbc1af437

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 18:52:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 1779d64f36b0d8092cad9baeb2f80fd4 SHA-1: 1a3d66643f48197b23d12073965912a6ef6712bd SHA-256: 4fbd1b3fbc1af437a566cf89029b1fd8930bb1128708bf543990dafcda114f63

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to sites offering game-related cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO abuse tactic. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the URL http://netcdn.co/app/431946152/free-designs-for-streamers-roblox-game-hack, which appears to be a direct download link.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.co/app/431946152/free-designs-for-streamers-roblox-game-hack PDF link annotation
- https://www.ak-oroslavje.hr/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/free-robux-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/how-to-hack-a-youtubers-roblox-account_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/how-to-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/cookies-to-buy-robux-free_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/install-coin-master_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/roblox-hack-v2-1-beta_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/free-hacks-free-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/roblox-robux-hack-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.ak-oroslavje.hr/files/minecraft-apk-free-download_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_002_off0000309c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x309C	22832 bytes
SHA-256: `496f1ac46b030393b4ba537d978a85114df4f45d0be4945782980cb65c9d5f7c`
`font_01_sfnt_off000063de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63DE	19304 bytes
SHA-256: `8b84e372fcdc739e9b8f644e06681e95be9c86462461c4937dd9633a5833ae91`

Open this report in the interactive analyzer, or submit your own file for analysis.