Malicious PDF — malware analysis report

Static analysis result for SHA-256 09da2ea9635dc012…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 15:52:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7a2a7fc0c949ff660824e10658f4fc03 SHA-1: 00c5004dd75b2fb0ad5c4a332582faef0d71e5ce SHA-256: 09da2ea9635dc01277b3dec37e5a88df4f131aa2c60834d3388369964d5ec1bf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to websites offering game cheats and hacks, suggesting a lure to download malicious content. The presence of a 'download button' heuristic further supports this, indicating a social engineering attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-free-download-linux-game-hack PDF link annotation
    • http://arkivthy.dk/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-no-download-hack_GM431946152.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_off00004856.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4856 24876 bytes
SHA-256: 73b41581591bcfbf767b5deab72c468d65f78d83ec14230b52361c555f3b6d5e
font_01_sfnt_off00007ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF8 18640 bytes
SHA-256: 2e09412aeccd6db579e17e260dc71f26a69ff1e6c71cb2a54a0bf8e01b9e41c1