Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0527b76804d4030…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 07:22:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b0aad84a94b0e45b6fcb4ff386e15e8b SHA-1: 69d735488f3dcafacc8e0a8327528d3cdb29f641 SHA-256: a0527b76804d40307755390043a4511928d79e5489d8daa3cc12129d00bc3fb2
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm promoting free game items and cheats. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' lure further supports a malicious intent. The document's primary function is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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-youtube-tiktok-dance-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-diamonds-coin-master_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_off00004b99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B99 27672 bytes
SHA-256: f9c839ed45851e2a3cfcab9f74433b762c7695507ff160c709bda41c05b4331e
font_01_sfnt_off00008afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFC 18312 bytes
SHA-256: 8427bdc2b6981f7c058405390673f44591eb7445caaa0bbacf2baffa8de7ed01

Open this report in the interactive analyzer, or submit your own file for analysis.