Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30822d94cfd692d…

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 10:34:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7090ba8afb25d85b674d312eec687a25 SHA-1: d1b480bc44019a9ad2d38baa6a17e289bb12f301 SHA-256: a30822d94cfd692dc4161a87f116ab58dcd132c6715aa4a680bdc98f508fd77f
102 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external websites. These links are likely intended to direct users to SEO spam pages or potentially download further malicious content, as indicated by the ML_NYX_PDF_MALICIOUS classification. The presence of a call-to-action phrase further supports a deceptive user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-coins-link-2021-deutsch-game-hack PDF link annotation
    • http://ipdrs.org/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/real-free-spins-for-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_off00004afe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFE 26256 bytes
SHA-256: 51e3b415e9beb524141393deb1de35a68b6bb87ae125ef6fa6998ecf37059557
font_01_sfnt_off0000867b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867B 18756 bytes
SHA-256: cee569ad26c6995f0462545108d280bf76b2c9dfe620e2643f0a7a8ec4db527a

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