PDF malware analysis — malicious · ff8db3caa0d01df1

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 09:17:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 7972563b07de2943b63c3a9104619cd6 SHA-1: 7d21cce21d64ff1325e84f22edb1f3ee59538fee SHA-256: ff8db3caa0d01df1c4ae5cba3ba2bc8a03e3f20d21114adef41030d79f08aca2

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure related to game hacks and free generators, suggesting an attempt to direct users to potentially malicious content or downloads. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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) or Microsoft license-boilerplate 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 https://netcdn.online/app/479516143/minecraft-pvp-hacks-game-hack In PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/earn-robux-websites_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/robux-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-raid-hack_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_off00005350.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5350	24384 bytes
SHA-256: `99f81ec0f6cc2c2a9d862dbeee7f9e7c2617f650e07758ab02d76b3b922c0e97`
`font_01_sfnt_off0000899a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x899A	18180 bytes
SHA-256: `0e2f0ac061c68c7eb9671630210144f167660a9976ef74b494f6c2985e791cfa`

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