PDF malware analysis — malicious · 2dcbf39d87491e7d

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 12:19:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 9f86035616b9309319f4ac61cb7cbacd SHA-1: d5a05efbc674fd67ed466dfb5afd49ecf44c6702 SHA-256: 2dcbf39d87491e7de04b1b9f40fbb1750682a527fb6d521a50fac96cd516f8ab

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one specifically advertising a "minecraft-windows-10-free-trial-game-hack". The document body and heuristics indicate a lure for game-related cheats or hacks, which is a common pretext for distributing malware or conducting phishing. The ML classifier strongly supports the malicious verdict.

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.
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
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.tw/app/479516143/minecraft-windows-10-free-trial-game-hack In PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/secret-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-free-no-sign-up_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-ftw_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-admin-hack-s_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/ultimate-game-365-free-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/skin-roblox-girl-free_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/tuto-comment-avoir-des-robux-gratuit-hack_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-scam_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_off0000325a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x325A	22652 bytes
SHA-256: `b11fba9b9b56fe70b017e570424a7bcf08c46f9b2c09161635c79075b03a0279`
`font_01_sfnt_off0000650a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x650A	18884 bytes
SHA-256: `a0946d741c75caf0365424744202d9dd02c4964339199d62fe769eb9e258c603`

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