Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45f25c1d91229a4…

MALICIOUS

PDF

44.6 KB Created: 2021-05-20 00:38:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 22ec396966b2af39f594719d94a108af SHA-1: 552e34fbc6f7f5d2055583f7e521a972c7415c4d SHA-256: d45f25c1d91229a4963cbffe617302c61198afbafc8ce508aa77638b25a44279
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, including a primary URL pointing to a 'coin-master-coins-free-game-hack' page. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO manipulation tactic. The presence of a 'download button' lure further supports the malicious intent of directing users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-coins-free-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004821.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4821 25480 bytes
SHA-256: 767b9878cfd9845b2e70f6ae724861acdc549a7ee40935dbbfc86aa5e21a5936
font_01_sfnt_off000083d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D5 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D87 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

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