Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3f1e4b122a6c2a…

MALICIOUS

PDF

52.6 KB Created: 2021-05-19 01:09:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fbf665db314eca443f7c626f5b6fb884 SHA-1: 50b978a04a2b93cab6fb159df93738911ba2a156 SHA-256: be3f1e4b122a6c2a74e6a93b11cf1a7f8bfa11b2f7d8c12670cf92b8c65c99a5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to other PDFs hosted on axiapublishers.com, suggesting a link farm designed to attract traffic. The presence of a download button lure and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or scam attempt, likely related to in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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/431946152/roblox-free-followers-game-hack PDF link annotation
    • http://axiapublishers.com/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_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_off00005876.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5876 38132 bytes
SHA-256: e54ca817119771a38a63d0dee23c59fff8720b28203d1ecb8060bafe01de0bbf
font_01_sfnt_off0000ac89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC89 18112 bytes
SHA-256: 09eaf6273d9322970c88a31482dbdf968207cb1ef73b55d7fd121c1bcc1f7e48

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