Malicious PDF — malware analysis report

Static analysis result for SHA-256 c606229f30cca09a…

MALICIOUS

PDF

69.3 KB Created: 2021-01-12 21:23:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5bbc6738a3c5d154972f6ec09003ae5a SHA-1: 213648cfcf7b8a27d34111e8b142a7c7f8eedf92 SHA-256: c606229f30cca09affd46d95eee4523e99e356183d679999b9afe28b8b4e80e0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/wb?keyword=hover%201%20superstar%20hoverboard%20reviews PDF link annotation
    • https://pevunefimexog.weebly.com/uploads/1/3/1/0/131070247/8411480.pdfIn PDF document text
    • https://xetinize.weebly.com/uploads/1/3/2/6/132695894/494faf9.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/didew.pdfIn PDF document text
    • https://gikowotezura.weebly.com/uploads/1/3/4/4/134493608/siposorepijowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475397/normal_5ff4c20da0fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_5fc38286242b0.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/vasidodikin_xanilenisugi_denumomef.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/0f878bacda.pdfIn PDF document text
    • https://tusunupo.weebly.com/uploads/1/3/4/5/134507020/1e5a17b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377933/normal_5f8c71622c487.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/nesogazuzatumomugos.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/mofezoda.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/perizaputunusafokexugap.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/60972257505.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/apache_kafka_book_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D5 5320 bytes
SHA-256: b45b9397a0a2108de9835aeaa463e82417f643ded3d2bfb714d4aabc7e1a606b
font_01_sfnt_off0000e2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F4 11036 bytes
SHA-256: ea36dc74e1633d7ec1e6ee480f58f98aabfed9b2fff782670a151e9c19323cde