PDF malware analysis — malicious · 97fb6394557fdad7

MALICIOUS

PDF

44.4 KB Created: 2021-05-14 01:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 49799314c85a6410d5fd5e0b40f3e071 SHA-1: 7015ca3ea8aeaa35ea7de77c509c5e6e18328da0 SHA-256: 97fb6394557fdad7f85882d0ee5d99c873f326a3dc23bdc0ec2c876e90974b52

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks' for popular games. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier output indicate a high likelihood of malicious intent.

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 https://netcdn.xyz/app/431946152/how-to-make-a-private-server-on-roblox-for-free-game-hack In PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/minecraft-esp_GM479516143.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-mster-free_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-earn_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-roblox-codes_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-font-free_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/blogger-coin-master-free-spins_GM406889139.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_003_off00004cc5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CC5	26176 bytes
SHA-256: `1181e5b8059a77ac38453bce8cf7997f28d5190027c789c1a22d9517f3d08845`
`font_01_sfnt_off000088e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88E2	19196 bytes
SHA-256: `b86313febfc454b426d55667776bc2f57fbcac051d8b12890de5d5336413d825`

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