PDF malware analysis — malicious · 2bd23fdf2acf2095

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 18:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: b3555c23900c049e3daf541e11c0b366 SHA-1: 3083cb0ec6c16f584ea8f6cbab9d9ddb0a6bb874 SHA-256: 2bd23fdf2acf20950faf16b3d03c7bda3a501e7db2bb110cf97e8ec9315ab359

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game-related cheats and generators, which is a common tactic for phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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-roblox-zombie-games-game-hack In PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-imagine_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-site-hacked_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/best-roblox-games-free_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/static-moonactive-net_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-robux-no-human-verification-2021-or-survey_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/comment-avoir-des-robux-gratuit-sur-pc-hack_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-earn-robux_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
`font_00_sfnt_off0000301c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x301C	22532 bytes
SHA-256: `56f4cd49533b251a387713a8c7c667a85b38e1cbb63d2e7d194f1f33dbf4ac58`
`font_01_sfnt_off00006283.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6283	19124 bytes
SHA-256: `51cef755bdca48fd83bb2dc6b75bd493a221af202a0f053eb59d148a29b0c02c`

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