Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9af3dcec970b27c…

MALICIOUS

PDF

131.2 KB Created: 2022-11-26 16:53:47 +00:00 Authoring application: moorras (via PDF Master 1.0.1) First seen: 2024-01-30
MD5: c9035ff5b807ebed1dfc08bcac6bf39e SHA-1: a1438fe2c5b489d113117e9869a908ef38f33403 SHA-256: d9af3dcec970b27cfad6edc710e91fc6a1170370ece41c112119e3d3ebb67275
172 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0007

Heuristics 6

  • 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.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • 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 http://rocketcarrental.com/evidentally.ZG93bmxvYWR8aXE1T1daemNIeDhNVFkyT1RReE5qUXlPWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/hyperlipemia/dGVsZXBvcnQgaGFjayBkZWthcm9uIG5lbWVzaXMdGV.unhelpful/jerusalem/shuffled.mouthed PDF link annotation
    • https://www.riobrasilword.com/2022/11/26/mod2wimzip/In PDF document text
    • https://www.goldwimpern.de/wp-content/uploads/2022/11/Waves_Complete_v90_R2_x86_x64_WIN__ST3RE0.pdfIn PDF document text
    • https://oknit.ru/wp-content/uploads/2022/11/Biochimica_Medica_Siliprandi_Pdf_19.pdfIn PDF document text
    • https://conbluetooth.net/cisco-packet-tracer-6-8-1-free-software-download-121/In PDF document text
    • https://womss.com/honda-hds-software-download-hot/In PDF document text
    • http://debbiejenner.nl/activator-for-windows-and-office-kms-pico-v9-1-crack-__full__/In PDF document text
    • https://www.dominionphone.com/refx-nexus-2-vintage-drumkits-expansion-pack-airiso/In PDF document text
    • https://slitetitle.com/download-driver-modem-zte-mf627-windows-10/In PDF document text
    • http://geniyarts.de/wp-content/uploads/2022/11/AGES_Software_The_Master_Christian_Library_Version_8_Torrent_LINK.pdfIn PDF document text
    • https://mylovelyplaces.com/wp-content/uploads/2022/11/odysvac.pdfIn PDF document text
    • https://www.goldwimpern.de/wp-In PDF document text
    • http://geniyarts.de/wp-In PDF document text
    • http://rocketcarrental.com/evidentally.zg93bmxvywr8axe1t1daemniedhnvfkyt1rree5quxlpwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/hyperlipemia/dgvszxbvcnqgagfjaybkzwthcm9uig5lbwvzaxmdgv.unhelpful/jerusalem/shuffled.mouthedIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text
🗂 Part of campaign: secureserver.net 1471 samples

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000971d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971D 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261

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