PDF malware analysis — malicious · 55633325e0bbdc45

MALICIOUS

PDF

33.5 KB Created: 2021-07-25 21:31:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 70ec04b0177647a542a5f0b7740c914f SHA-1: 308ca3df98745f355c79faf429af043305b12d4e SHA-256: 55633325e0bbdc458f95374066ac0441e3279dd4047fbb793afe109b2da6ba94

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for game-related cheats or generators, likely intended to lead users to a phishing or malware download site. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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.tw/app/406889139/coin-master-daily-free-spins-link-today-game-hack In PDF document text
- https://meltonschool.org/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://meltonschool.org/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://meltonschool.org/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
- https://meltonschool.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
- https://meltonschool.org/images/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://meltonschool.org/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- https://meltonschool.org/images/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://meltonschool.org/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://meltonschool.org/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://meltonschool.org/images/how-to-get-tiktok-famous-free_GM835599320.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_off00002c38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C38	22952 bytes
SHA-256: `039b2ac6282fdf6e510f15e67044191b877f08897b0e1a19a4e03faa7dc059e6`
`font_01_sfnt_off00005fca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FCA	18652 bytes
SHA-256: `b7acebacf47409c7f0f2932ba41e4c1dc120b4ef5280387cf9333091bd47b2e0`

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