PDF malware analysis — malicious · c5426aaa9ee284f2

MALICIOUS

PDF

46.6 KB Created: 2021-05-16 15:01:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14

MD5: a850697d07919d6822e1d49e39909bbe SHA-1: 2aba390f57d2e28ed186a6823fe3eb5e45924c04 SHA-256: c5426aaa9ee284f2d0577a67297dbe211f35161bb0d9318f340a125d0c1a2b79

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and heuristics indicating a lure for downloading potentially malicious content, specifically game hacks. The ML classifier also flagged this PDF as malicious. The presence of multiple URLs pointing to similar content suggests a campaign distributing these lures. No scripts were extracted, but the document body and heuristics strongly indicate a malicious download attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 4

Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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/431946152/roblox-hack-com-game-hack PDF link annotation
- https://naturenz.vn/public/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://naturenz.vn/public/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://naturenz.vn/public/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
- https://naturenz.vn/public/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
- https://naturenz.vn/public/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
- https://naturenz.vn/public/files/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
- https://naturenz.vn/public/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- https://naturenz.vn/public/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://naturenz.vn/public/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
- https://naturenz.vn/public/files/sites-to-get-free-robux_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_003_off000046ce.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x46CE	28880 bytes
SHA-256: `fb6f0e62e47be2d6d91bdb88411ea5a3357b9f89725c7aad34ae5c21c6444b7a`
`font_01_sfnt_off0000895d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x895D	2832 bytes
SHA-256: `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`
`font_02_sfnt_off0000930e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x930E	18440 bytes
SHA-256: `92e56247950081f5f8ea935637ec6d93dafa31aa334148af106ab9a8365bd2e0`

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