Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9a998936b36d74…

MALICIOUS

PDF

102.9 KB Created: 2020-11-24 16:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f3db173b96138153eba4f6feaab3ccf0 SHA-1: 9129c2a5ec807cf8fef2b7dd87a9abf2de006f9f SHA-256: ea9a998936b36d74fe3140a9af687746e7067f76ad7a188e524e0d46871c408f
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 0.9997

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://traffking.ru/strik?utm_term=meet+the+santas+full+movie+youtube PDF link annotation
    • https://sokegipamemaxo.weebly.com/uploads/1/3/4/3/134345901/9613409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446015/normal_5fb342f76beab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5fa0f4ac4a8b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f87192989dbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5fbbf13e8273b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_5faa1d52bb361.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/ebc14d91-5013-4938-9f4d-e54863e05efd/pukafukatariwojibowugepap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae787d63-5417-4822-986e-398c04e34939/44687706168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d124812a-ec93-4650-b174-1b4adc5b395e/73604537577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11fa24d-0507-4d55-aa95-a31f87308231/dot_com_secrets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af4d0209-bce7-4725-8c42-835c4eb570cc/tivoreninilezakobisotir.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/fusal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f55b0e-95a8-4271-a8d4-a1af987d3629/death_by_meetings_by_patrick_lencion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032e4112-230a-40b2-a853-53e0f700f1c7/saber_conjugation_past_tense.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_off000157ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157AD 5216 bytes
SHA-256: 225f347003a8aa7bc8c74d43714b4cc15440475689f2255e22fdaf68d0a3398a
font_01_sfnt_off00016968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16968 10856 bytes
SHA-256: c070fd24a1323d7db285a86365434cd9a10d14e12cc0cb78cbe94eb94ea6b0ca

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