PDF malware analysis — malicious · 0b59ab246ef3466d

MALICIOUS

PDF

33.8 KB Created: 2021-07-01 13:52:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 7ece4d9e663ff86b6c9d975d8031aebb SHA-1: 894a9a269519275531af2905b91b96f7f0dea9d0 SHA-256: 0b59ab246ef3466d06d203249b6a12428677e45720c1c2bfe1c67dfaeb87c630

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which are related to obtaining free in-game currency or accounts, suggesting a phishing or scam attempt. The presence of a 'download button' heuristic further supports this, indicating a lure for users to click and potentially download malware. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs point to suspicious domains.

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-obc--game-hack PDF link annotation
- https://www.modestuae.com/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/conseguir-robux-gratis-hack-inspeccionar_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-generator-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-from-form-tampering_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/cooo-tener-un-pokemon-roblox-free-pokemon-brick-bronze-beta_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/hack-roblox-a-telecharger-gratuit_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coinmaster-com_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-roblox-2021-promo-code_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-spins-coin-master-cheat_GM406889139.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
`font_00_sfnt_off0000314e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x314E	21932 bytes
SHA-256: `071479d34223c504770b9162de5390c8a21015c36ed83e9c063caa51ad04e1fb`
`font_01_sfnt_off000061ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61AC	18224 bytes
SHA-256: `c283399651d62858291eefbf16c694535341791ab785e099585a1f29cc341cac`

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