PDF malware analysis — malicious · ceec8c5a94035b0a

MALICIOUS

PDF

40.7 KB Created: 2021-05-19 07:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 99cb135ce7b56b63288576db8c247736 SHA-1: ac89e13833671c0cde0b22326a4ff632ce0536fa SHA-256: ceec8c5a94035b0a91da4d9008e98e3cfadb4f9cbf5ade03262111a362b39fbd

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/835599320/tiktok-for-free-textbooks-game-hack PDF link annotation
- https://www.sg-escholzmatt.ch/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/hacker-coin-master_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/free-roblox-premium_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/oprewards-com-roblox_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
- https://www.sg-escholzmatt.ch/images/coin-master-server-hack_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_off00004794.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4794	23876 bytes
SHA-256: `4027f6409863a813529fab28153c2c67f042ff2ed2dcb364c843c084bca84eee`
`font_01_sfnt_off00007e12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E12	17824 bytes
SHA-256: `04243df8154ed71930de1a6b48a6a414358eab1d588844450dcb70ab7756c918`

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