PDF malware analysis — malicious · 5f3b9ff99d4c610e

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 10:17:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 0a05b177abaa6b2437e507dfbb726a5d SHA-1: b88490a1f9ba64c8df3c03718738744b42181740 SHA-256: 5f3b9ff99d4c610e06a3d1020866654d5ac06ec919c6d7f9f715abee6832489a

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a lure for game hacks, specifically mentioning 'Roblox Jailbreak Hack'. The document body and extracted URLs reinforce this, pointing to sites offering 'free generators' and 'hacks'. The presence of embedded URLs and the ML classifier output strongly suggest malicious intent, likely to lead users to further malicious content or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
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.
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.co/app/431946152/youtube-roblox-jailbreak-hack-keycard-game-hack In PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-robux-obby_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_off00003153.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3153	22676 bytes
SHA-256: `21522f25cb6fde3450f153519ef760d59577c499c575fa149d817f42d08aa9d6`
`font_01_sfnt_off000063fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63FD	19700 bytes
SHA-256: `e807b095e6b5e08455730964151f98a953b26bc71bc09e46e0755d303f623ad3`

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