Malicious PDF — malware analysis report

Static analysis result for SHA-256 549ec1f4b4b80914…

MALICIOUS

PDF

120.2 KB Created: 2020-11-20 03:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ea76c515f30f8fd0d277e415e88f7c45 SHA-1: d7679c50e6dda7805412d536410c9cd086c09612 SHA-256: 549ec1f4b4b80914ea5a8a0c5269347ad6b2fa9512909186611037232c8c7405
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffset.ru/strik?utm_term=reglas+del+baloncesto+resumidas PDF link annotation
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/filipefoxo_wuzivon.pdfIn PDF document text
    • https://sesorefamasupuv.weebly.com/uploads/1/3/1/0/131071262/dc12ccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408711/normal_5fb702e545d04.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/vadewulusiter_jupezitejok_tuzadaru.pdfIn PDF document text
    • https://jajewivazag.weebly.com/uploads/1/3/4/4/134491582/demefenulune_tuzuxufa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_5f9271493ad5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ae33361-6225-4b57-84a7-faf762ceee68/shakespeare_in_the_classroom_miramax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9526f25b-7ab4-4256-afbf-192f67c7f43c/mercury_throttle_control_assembly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73b234e-1e9f-47a3-89fb-29ce5968d84c/katalog_kabel_kmi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a4f315-8318-4e7d-a3ec-daffe580be33/torva_vs_anima_core.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bb48e0e-843a-4efd-aa71-2f1e0bc89447/dead_ahead_zombie_warfare_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37d89902-b436-4995-8294-455364f49aa3/45105660910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb5b8918-7410-4b09-a7b2-cfb3b7132b8b/boo_radley_to_kill_a_mockingbird_physical_description.pdfIn 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/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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_off00019ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19AD4 5404 bytes
SHA-256: 639e016a3c398e01f6a32d56b3d0048b8ad0168e1f32f186c1022892ba054f0a
font_01_sfnt_off0001ad24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD24 12108 bytes
SHA-256: 517fc38b809b1ccea0a5bdf18a353084f9056d7ebcdaaa2b715d7693d7908063

Open this report in the interactive analyzer, or submit your own file for analysis.