Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdc13d623953791…

MALICIOUS

PDF

47.8 KB Created: 2021-05-12 04:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2c2cbf05160e3df009ed6a5d15108acc SHA-1: 79ab60b3a088817f34acf442f82dbb314b1925f0 SHA-256: abdc13d6239537911b2d672c925f6b5f72686de8e1e57558b4c7d5483d9e83d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as a link farm for game-related cheats and hacks. The document body and extracted URLs suggest a lure for free Robux and game exploits. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate a potential for malicious redirection or content delivery, aligning with a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/how-to-get-free-robux-2021-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E3 28536 bytes
SHA-256: 8764dd6491558866f46ca023a8f8002a998a94e0cb6002850ace99cb8559ab40
font_01_sfnt_off000089d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00009700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9700 18684 bytes
SHA-256: 662354714a7c4aa127b8bd681013e9d5d113fbfc5a2f5afb2d34764175bb04a5

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