Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eab29d13824e403…

MALICIOUS

PDF

48.1 KB Created: 2021-06-09 15:02:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0dbed58ee2f3d94d7845ee50bf7c4615 SHA-1: ae29c83ea71661954fc71e537e62011a56bff448 SHA-256: 9eab29d13824e403429d1ee08078978905d5d070dcab72de5239c5980895a92e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure impersonating Facebook, directing users to a URL that promises Roblox Robux. This URL, https://netcdn.tw/app/431946152/roblox-tuto-robux-no-hack-game-hack, is hosted on a domain unrelated to Facebook, indicating a credential phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the phishing and potential payload delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/roblox-tuto-robux-no-hack-game-hack.
  • 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.tw/app/431946152/roblox-tuto-robux-no-hack-game-hack PDF link annotation
    • http://sbm-nn.ru/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-de-robux-2021-gratis_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hacks-for-rb-world-2_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-you-get-free-robux-hacks_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-phantom-forces-hack-aimbot_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ec2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC2 27788 bytes
SHA-256: 430823ace3166f1c61e5755bf051d8a36b379cd378f9b790327078d0024def42
font_01_sfnt_off00008f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2D 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000098db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98DB 18428 bytes
SHA-256: fe6f5b0f51e04d1dcaac24895d835a590d227ddd7e4e032a0c5b548f4b11aac6

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