Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48cb33c354d8176…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 04:12:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b74f437d57e56ca316d511dfa2b6a38b SHA-1: d339e679038494b5210eef8053d14d2f986cd027 SHA-256: c48cb33c354d81767a99dd134f05a0f2a5fbea3a8c29ab34341b05d3449262e3
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and a call-to-action to download free Robux or game hacks, directing users to malicious infrastructure. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robloxhero.xyz-free-robux-game-hack In PDF document text
    • http://sbm-nn.ru/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-coin-master-spin_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-hacking-news_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-master-hacks_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DB 25500 bytes
SHA-256: 314181b26c523fb83ea2a8b57e6ee442aa2d4b569ac33d85387ceedce1010b27
font_01_sfnt_off000082ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82ED 18584 bytes
SHA-256: d96645d743d7bc7e16305d404e9ae036d13b2ec1544ce4a3e073a2af54c3cd1e

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