Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dcd7bc5471f060…

MALICIOUS

PDF

66.2 KB Created: 2020-12-21 17:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 54f311567dca2304da0238b4974d6bd3 SHA-1: 201972994da07b106fd3d3f1d1403252f39cf0eb SHA-256: 46dcd7bc5471f0608dcda12c030117c730a0bd2904f0b676b03373e0ab1d853c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/square?utm_term=bimetallic+nanoparticles+formation+mechanism PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fbd60cd5198b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f8ccd746553b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407304/normal_5fa5b9c29a883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5f93785352156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390071/normal_5fdeea9f083f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_5fd68d5a0fa1c.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/wunojipu/battlestar_galactica_razor_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0b1c1972c46e3c666fb2/1606290204960/razas_de_conejos.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/prt_pocket_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/advances_in_therapy_author_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/pasugebapokerulok.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcecd218de958422211e0c6/t/5fd656805b1f6f7539d5740b/1607882372361/baseline_survey_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a285f09e-d9d0-461b-9ef2-2829c4156fc3/db2_sql_error_sqlcode-552_sqlstate42502_implicit_create_schema.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/63830455621.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde968fd548586ddd28100e/t/5fdec201f23a830a59b3b78a/1608434178486/67142298117.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_off0000c601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC601 5304 bytes
SHA-256: 0be5ef0d833619639fbaf8a1ef916d6434e009b849d7bc3ba02eeabafab90d73
font_01_sfnt_off0000d7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DC 10436 bytes
SHA-256: 34743aca912fbd5a7f587a84a66bf65bf68ee5d45f7ac8dee68f5d5af9a9c656