PDF malware analysis — malicious · 24b91467644bd046

MALICIOUS

PDF

52.1 KB Created: 2021-06-07 03:49:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 5ddfbe3f8a4f6b8217aa400b0e3998a2 SHA-1: 64253671231a6600877d6b58766039e892a018af SHA-256: 24b91467644bd046d94a99153bacfe3f4adac734a025d732b5d900fc07671ee6

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as Robux. The primary link directs to a page promising a 'VIP server in Roblox for free', which is a common lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9464

Heuristics 4

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.
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.tw/app/431946152/how-to-make-a-vip-server-in-roblox-for-free-game-hack PDF link annotation
- http://www.valenciamaids.com/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/robux-no-survey_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/free-roblox-items-codes_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/roblox-avatar-girl_GM431946152.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
- http://www.valenciamaids.com/userfiles/files/roblox-printables-free_GM431946152.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_off000053ff.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53FF	31732 bytes
SHA-256: `4f07df1d32f219b106e5efdef0337cfa7cd57da901f530dced8c023348681e1a`
`font_01_sfnt_off00009c7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C7B	2908 bytes
SHA-256: `e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b`
`font_02_sfnt_off0000a674.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA674	19248 bytes
SHA-256: `a8d582640126a0fb4a820a54a158c6018e32d5d128205231d10d37106cf9644a`

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