Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3098d7b385fc3b3…

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 22:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0adba29e2b182b30712f00e5ff49ca72 SHA-1: c87b8854e611d5097cae35672915945012f6f528 SHA-256: c3098d7b385fc3b397d24fbbbb9dfd99bd6bc49ec0ddd5425742d2d9d8e54077
122 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Minecraft Hacked Client" download, directing users to a suspicious URL. It also functions as a link farm, embedding numerous links to other PDF files, likely for SEO manipulation and to host additional malicious content. The presence of embedded links and the overall structure strongly suggest a malicious intent to redirect users to potentially harmful sites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-hacked-client-download-game-hack PDF link annotation
    • http://www.pleiadisrl.it/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/simplysarc_GM479516143.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_off0000475e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x475E 25168 bytes
SHA-256: 53372adf777a3c367123baa098d1b56866e8364e4ece4fd37167573a7fd6d93c
font_01_sfnt_off00007ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF1 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000089a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A2 18460 bytes
SHA-256: e3089071acaa3d725dff62b6cfe00465db2477317d389ff23f6444401690c9a2

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