Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a0e186bc96a0ea…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 08:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e8142b5069cbacba9e8585638f8a0762 SHA-1: e08439c5410f586f9c1e8725e47ca01845612b1c SHA-256: d7a0e186bc96a0ea588dba024ed89191f371405f91366a8bfac1e10e083be810
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links and a document body that explicitly advertises 'Free Robux 2021' and related hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high. The primary URL, https://netcdn.xyz/app/431946152/get-free-robux-2021-game-hack, is likely the destination for this lure, which is a common tactic for phishing or scamming users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/get-free-robux-2021-game-hack PDF link annotation
    • http://somvisio.es/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://somvisio.es/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://somvisio.es/images/coin-master-free-spins-2021-generator_GM406889139.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_003_off000046fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46FD 24824 bytes
SHA-256: 67b85e77c1d3d33b2a7b87411ff52fa302861fd9716c6bed28faa0ca5e0597e8
font_01_sfnt_off00007fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA3 18520 bytes
SHA-256: 6fe0ff66a16b6ee6dc50657e9361d5c62c74e6da0263e26ac7f67f588141101f

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