PDF malware analysis — malicious · a5fe77ad6b037362

MALICIOUS

PDF

45.6 KB Created: 2021-05-10 16:07:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 8ce7c9a1ab200a85c17b8ae8062743eb SHA-1: 8fe115a80da581d1fcdd6c1acae8a1c3c5c974f6 SHA-256: a5fe77ad6b037362834868d0d21c4b8156e62a6426ed6fa56d6cbf932ca809b6

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and references to game hacks and generators, such as 'Coin Master Hack Apk Android' and 'how to get robux for free'. The presence of a high-confidence ML classifier firing and multiple PDF URI heuristics indicates a malicious intent to redirect users to potentially harmful content. The document body and extracted URLs strongly suggest a social engineering lure to trick users into downloading further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

Heuristics 5

PDF links to a 'free generator / game hack' redirector high 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.
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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
External URI info PDF_URI

PDF contains an external URL action
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/406889139/coin-master-hack-apk-android-game-hack PDF link annotation
- http://45.115.65.99/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfPDF link annotation
- http://45.115.65.99/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/reddit-coin-master-hack_GM406889139.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_003_off000048e8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48E8	26820 bytes
SHA-256: `fc5880f98f8c9f9014eaac24358b7a8dad0210ee8f8e9c315be850c128871e6a`
`font_01_sfnt_off00008660.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8660	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009012.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9012	18068 bytes
SHA-256: `826b659b6d6a919198e40a4f05f943b2342615ea87152df5852563aa56c598f0`

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