PDF malware analysis — malicious · 5c7a740bc0d24416

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 19:18:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: d9456ac8a782f1c26ec45bb877832f8a SHA-1: 8852d9a285f4b9d9ed1a0c53f8a8210b10e2db0d SHA-256: 5c7a740bc0d244165ffc4fa85dffcfe7c752326788cf2f431183f427dc9c5b82

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The primary malicious URL identified is http://netcdn.co/app/479516143/minecraft-apk-download-v1-144-2-free-game-hack. This lure is designed to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or social engineering attack.

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.co/app/479516143/minecraft-apk-download-v1-144-2-free-game-hack In PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-no-hack-or-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hacks-to-get-money-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-noclip-speed-hack-cheat-engine-64_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/op-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-use-cheat-engine-on-roblox-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_off0000313f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x313F	21980 bytes
SHA-256: `24d36fa824995df6ea9e5f5ad02e6f8eaa99507b484d5a5fe657c94e23eeb496`
`font_01_sfnt_off000061a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61A4	19348 bytes
SHA-256: `cbff01ccdd3c3b72bc714cfdebb7498c922105dbf2038e11fbfe886e105093d3`

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