Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c56c0186779dd43…

MALICIOUS

PDF

46.3 KB Created: 2021-05-15 22:21:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d06b7c646b78cda7c53c80a589f23699 SHA-1: 0af9fef160612a377e7a80c0764d3c6c14ba6072 SHA-256: 0c56c0186779dd434bb4322b450d7492f1e1b85133d01da1fb3f0c5650081988
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a URI pointing to external resources, suggesting an attempt to redirect users to download or access malicious content. The ML classifier also flagged this PDF as malicious. The presence of game-related lures like 'Coin Master' and 'Robux' indicates a common social engineering tactic to entice users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-role-in-coin-master-game-hack PDF link annotation
    • http://202.182.59.89/perpus//repository/roblox-imagine_GM431946152.pdfPDF link annotation
    • http://202.182.59.89/perpus/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/minecraft-pe-hack-client_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_off00004a53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A53 24272 bytes
SHA-256: 93643a88b3bef870b24f01911f62198b12491e1d595c8e65dff05b6c31158bc8
font_01_sfnt_off00008212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8212 4108 bytes
SHA-256: ec2411f89949ee2684f2a4cb34103044ad9668788161d6eddac0558c058eb237
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 19040 bytes
SHA-256: 6c0160f4e8370884b89d1f5ac5c6f979519ae32e20f7e014c7dd79f59ea0d9cf