PDF malware analysis — malicious · 44bbe1a2892b8149

MALICIOUS

PDF

48.8 KB Created: 2021-05-19 11:49:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: d52659cebe93220df3dd7a789e184091 SHA-1: 30198c3b7fbc1eb43658a6002994a464e15a4074 SHA-256: 44bbe1a2892b814946ae16c06f839f6ec0dbe2580a005f1d01ada1cf251dade1

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 0.8642

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/coin-master-hack-to-get-free-spins-game-hack PDF link annotation
- https://europainstitut.hu/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
- https://europainstitut.hu/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-robux-codes_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
- https://europainstitut.hu/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
- https://europainstitut.hu/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/daily-spin-and-coin_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b9e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B9E	24976 bytes
SHA-256: `7526df22164c026ef96b1e01ac21a9f636c253f9c85e63be97b240f36a04d5d9`
`font_01_sfnt_off0000856a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x856A	4028 bytes
SHA-256: `a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91`
`font_02_sfnt_off0000930b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x930B	2788 bytes
SHA-256: `6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530`
`font_03_sfnt_off00009cfb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CFB	18056 bytes
SHA-256: `6ebf753f6e2aa75b7f89159318a8360a057196b850713683f584e5709dbcaa9a`

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