PDF malware analysis — malicious · a7e532e663739ba5

MALICIOUS

PDF

42.0 KB Created: 2021-05-19 17:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: b8de95d5a0b1b9566b53d7c3e931fa1c SHA-1: f2fed2944403ab16416e19a5b9149c055d0ff5f6 SHA-256: a7e532e663739ba5bd73a5f9ae819c4035518bf69252b5b4a87ee7d272b81d67

76 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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.
External URI info PDF_URI

PDF contains an external URL action
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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/1094591345/pokemon-go-free-candy-game-hack PDF link annotation
- https://ifef.es/ckfinder/userfiles/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-spins_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/pubg-uc-earning-app_GM1330123889.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-robux-no-verification-or-survey_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
`stream_003_off000048d3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48D3	24816 bytes
SHA-256: `15468736b2da32986e1fdb4abdfbf12f04c76b57c96e2fe7d0669f4f42b4418a`
`font_01_sfnt_off000081b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81B3	18424 bytes
SHA-256: `d3124825f3409532975f3eb64145053b910def1905341551ee227527a58c6100`

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