PDF malware analysis — malicious · 113bb079f5d82787

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 07:08:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: b877baf30a57e892f05b604a68969e79 SHA-1: 0ea5a536fec774c4bfeb79fd32ae52a11dc90117 SHA-256: 113bb079f5d8278798cf33e079390e15e4ad2147f305fa0e0ff0438146395000

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free in-game items or currency. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document's structure and content strongly suggest a phishing or scam attempt, leveraging popular game themes to entice victims.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/how-to-get-free-robux-without-downloading-anything-game-hack In PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-earn-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/400-robux-free-2021_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-2021_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_off000052de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52DE	24412 bytes
SHA-256: `b3eb1d94e7d944a62b626cf0a2208490c42103e20e4f564409e770e6ebc46615`
`font_01_sfnt_off000089a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89A7	19880 bytes
SHA-256: `b3cc443709e3d0792834aff36fc45ebf0729ec5a88bbf4f00dbe60b4c0075203`

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