PDF malware analysis — malicious · 081c3507bcbd288f

MALICIOUS

PDF

36.6 KB Created: 2021-07-07 18:10:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 64da7964f06acbe4419c9a9b5f197f77 SHA-1: 2b261bedab0c744bb3cec656a7e36f5e0652f150 SHA-256: 081c3507bcbd288fd9a7edcb7632093d1fdf95e48de11042a9f965d07fb90db7

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external sites, including a known malicious redirector, disguised as game hacks and generators. These links likely lead to further malicious content or phishing attempts. The document's structure and embedded links strongly suggest a social engineering lure to trick users into visiting malicious sites.

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.
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.
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/431946152/can-you-get-free-robux-on-roblox-game-hack In PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-gifts-right-now-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/get-me-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-bandit-simolator-hack-infinity-coins_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/hacks-for-boulevard-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/2-characters-from-roblox-standing-together-copyright-free_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-microsoft-rewards_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_off0000379d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x379D	22740 bytes
SHA-256: `a6dd3616483853d08723480be81acd8db4efe0fd8361a1f02cbbbb3b3607b7e0`
`font_01_sfnt_off00006a10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A10	19056 bytes
SHA-256: `212cafc25ec0536741ac5c1aa90543f36b34a777adc44243741e4ba36ab4d37b`

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