PDF malware analysis — malicious · 969cf922d82d2f29

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 15:06:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 533365b513e2916bb1093d93b54ee634 SHA-1: a97beec90ca39777ebd6b7845c35cdbd3d3e4eb9 SHA-256: 969cf922d82d2f29eed0424a25076fc55e6db08975515b121baadfba80125d1b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and cheats to entice users. It contains multiple embedded links, including a primary malicious redirector at http://netcdn.tw/app/406889139/coin-master-hack-mod-apk-2021-download-game-hack. The document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment. No scripts were extracted, but the presence of multiple redirector links indicates a high likelihood of further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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-hack-mod-apk-2021-download-game-hack In PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-village-3_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/quick-and-easy-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/work-in-a-pizza-place-roblox-cheats_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/si-un-hacker-te-sigue-en-roblox-te-puede-hackear_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-youtube-roblox-locus-hacking-my-sisters-acount_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/calvinkleinoverall-roblox-how-to-get-for-free_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/minecraft-java-free_GM479516143.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/nuevos-hacks-de-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/robux-free-robux_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/tiktok-free-printables_GM835599320.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-only-today-ad_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-no-verification-no-download_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
`stream_002_off0000318f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x318F	23316 bytes
SHA-256: `9c3f0e43338e56cd67ab5e60eaf89c607754eefff67eec67e8aa3b251495be30`
`font_01_sfnt_off0000666b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x666B	19160 bytes
SHA-256: `2e0c8884db6cd57ed43f8d315a9bbff67e391c14a9a376a83d1d8791999d1529`

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