Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b696775d50b2b1…

MALICIOUS

PDF

50.3 KB Created: 2021-06-03 21:17:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 50c2e5b07f3bc746c19d1a45083fe0f8 SHA-1: f5e7cf6fe18db763fffd4710fcc574d7962d6167 SHA-256: 35b696775d50b2b198773507110d8fd3f21294b59b04fd28f2b85dd7b553f536
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are part of a link farm, suggesting a deceptive SEO tactic. One prominent URL, 'https://netcdn.online/app/479516143/minecraft-mods-download-free-game-hack', is presented in a way that suggests a download. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-mods-download-free-game-hack PDF link annotation
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://man2tasikmalaya.sch.id/__statics/gudangsoal/files/oginject-co_GM406889139.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_004_off00005481.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5481 30368 bytes
SHA-256: 116abaa24088f9bb1bb5b083e94f2e0d209e50a54568ebdeafeffa8d28a2c4cc
font_01_sfnt_off000097e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E9 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off0000a1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E6 18292 bytes
SHA-256: cdbcc94192cea0c1a32d76b4e8648406db092070658ebd9590606dd52a123660

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