PDF static analysis report

Static analysis result for SHA-256 1873d64f502e76e3…

SUSPICIOUS

PDF

36.2 KB Created: 2021-05-24 07:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 44c6213c90065a30a07168aa38707a50 SHA-1: c698c2e10f9a44ae82a418f3fcb02432a8775cfd SHA-256: 1873d64f502e76e3c946cabce576454c80caa1bc021251a61c43b5379b8835e4
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a prominent external URI pointing to websites that offer 'free followers' or 'free robux' with no verification, strongly suggesting a scam or phishing lure. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the presence of these lures and the ML detection indicate a high likelihood of malicious intent, likely related to credential harvesting or ad fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 3

  • 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/free-tiktok-followers-no-human-verification-or-survey-game-hack PDF link annotation
    • http://bufbd.org/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/free-robux-microsoft_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000317f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x317F 24864 bytes
SHA-256: 9c1b41d021aafd33a03b0db58fd6ca39f673dd4174a64a70861c0e6ffcbadd62
font_01_sfnt_off00006a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 18748 bytes
SHA-256: 6c56a9102827ae6ceba4f8b38934fd9fcdc3c6624088a0c8a681a3e50045d012

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