Malicious PDF — malware analysis report

Static analysis result for SHA-256 b26bbf065721275d…

MALICIOUS

PDF

33.6 KB Created: 2021-05-20 18:26:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 88504b4a2eb09a7c58a4b96578147b53 SHA-1: 65aab5d92e8337cba7426d60f54f443d4785dc0a SHA-256: b26bbf065721275dc8200b6d24c711bbb3568dfaeb2d70334f24bce329f30025
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a lure for "TikTok followers" and impersonates Facebook, directing users to click a link hosted on `netcdn.xyz`. This URL is associated with credential phishing or potentially downloading further malicious content. The presence of multiple related URLs on `m-sv.net` further supports a malicious intent to distribute harmful content or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9506

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.xyz/app/835599320/how-to-get-followers-on-tiktok-for-free-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.xyz/app/835599320/how-to-get-followers-on-tiktok-for-free-game-hack PDF link annotation
    • http://m-sv.net/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/tiktok-free-crowncom_GM835599320.pdfIn PDF document text
    • http://m-sv.net/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/free-robux-no-scam_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.

FilenameKindSourceSize
stream_002_off00002eed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EED 23332 bytes
SHA-256: 63083f9548bb6d5bf6d933973c6724dc178d65cb5924a407268a983f4009e373
font_01_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 17692 bytes
SHA-256: b635499a4f9fb6d9e8967cb3fdd5afd49967982b90c247824071efdea06cfe8e

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