PDF malware analysis — malicious · 3676e966d3bf9997

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 17:12:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 21c83ec88496e195fad765abc99d60c4 SHA-1: 8b258505f7f1db726d09b860c262f9abe6aa8c9e SHA-256: 3676e966d3bf9997e536453304e9f24e193efdd86d52eb89deea81706a8d88dd

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector, which are designed to lure users into downloading potentially harmful files such as game hacks or cheats. The document body and embedded links suggest a scam or phishing attempt to trick users into visiting malicious sites. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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/406889139/hack-coin-master-apk-2021-game-hack In PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-see-chegg-answers-free-tiktok_GM835599320.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/tiktok-par-free-followers-kaise-badhaye_GM835599320.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000051a1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51A1	28740 bytes
SHA-256: `152b84513ef56b1af9d1e7362eeffba812f4e1f55d2825ebe8bd44234ee77cf3`
`font_01_sfnt_off0000910c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x910C	2824 bytes
SHA-256: `381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5`
`font_02_sfnt_off00009aaf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AAF	18296 bytes
SHA-256: `b61961072e26d7bd0036d68b99eed8fd62c21626b4f1bee3075b0e2ab41f2bf5`

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