PDF malware analysis — malicious · 615c1d27cfa538a5

MALICIOUS

PDF

46.1 KB Created: 2021-05-16 09:53:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e99cf14d3f6a6b37be5c4953f8058ac7 SHA-1: 89f396593b709da05a14e27c0aaa2f08edcca28a SHA-256: 615c1d27cfa538a529126e521ceb2db0ee2acc7f02031530e41e733577e18151

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 0.9432

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/406889139/hack-coin-master-8-ball-pool-game-hack PDF link annotation
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/minecraft-items_GM479516143.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-card-collection-in-coin-master_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_off00004c57.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C57	25780 bytes
SHA-256: `9d303a03dc68aac00d36f63c59416c4dff045efb26cbde9d52285718fbaa05ab`
`font_01_sfnt_off0000878d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x878D	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009178.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9178	18372 bytes
SHA-256: `b4813e09d90f612ee66c803ba32218c751333fc6bf2f429b5e69f4ac915b2ccc`

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