PDF malware analysis — malicious · 11d280080e21e4c4

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 16:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: d96c2495de570254606a6ce262e3eed9 SHA-1: 47566f6d175285ec16606033bb63f2e0fbbed595 SHA-256: 11d280080e21e4c4de2e533b4fb36fa8dddb1a139a7b591ff9197cfd1d64da64

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure URL is http://netcdn.tw/app/406889139/coin-master-cheat-apk-free-download-game-hack, which is associated with known malicious redirectors. The document body and heuristics confirm the intent to trick users into downloading potentially harmful content.

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-cheat-apk-free-download-game-hack In PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/roblox-free-printables_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-robux-hack-roblox-2021_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-beautiful-hair-roblox_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-goahead-london-roblox-buses_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/is-free-followers-on-tiktok-free_GM835599320.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/coin-master-official-website_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/roblox-build-a-boat-for-treasure-free-vip-server_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- http://uas.com.my/uploaded_files/userfiles/files/comment-avoir-des-robux-free_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_off000031dd.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31DD	23048 bytes
SHA-256: `3fb354de7c09f1f8110040293a05bf4448ebf4b99745de0d3ce7813d56b2112a`
`font_01_sfnt_off0000659a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x659A	19092 bytes
SHA-256: `49edf52c5cf368a8d41ab1b9b283a900cdd060b2dfdd3a58fc5bfb308b9a1ed9`

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