Malicious PDF — malware analysis report

Static analysis result for SHA-256 055102a274b37d20…

MALICIOUS

PDF

65.6 KB Created: 2020-11-20 07:18:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c5f657922825bb735a83d87cf92fed22 SHA-1: 1fa1ab9882e337d8feafc40dcb9bf9e3b23207cb SHA-256: 055102a274b37d2076a3cf23bfd4121063264987a9e7998dbfd1f948197ed3d9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=iicsa+truth+project+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5fafeacc46c31.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/pukaridimupo/genotoxic_impurity_guideline_emea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e02eb580-edad-4205-8beb-5df33101e8e4/jensen_projection_clock_radio_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f22574a-2ea7-4568-b7dc-4a1fe6087905/61674184945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56bd4040-c443-4952-a70c-794f6c99737f/12479131759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b47a79-d903-42bc-bec9-4e8ae37c1b77/21636766374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be349dcd-624e-4b5f-a29f-4b4ac2d168ef/jigepetevojupow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ef38c1-e725-449c-b1a3-59b19bc0c461/83553184177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb11dc0-ba0d-48ce-b279-cf82089aba23/omnipeek_download_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/jobeduvabazezakirukenup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5060105a-0363-4b13-9c5a-d1010015b39e/beginning_algebra_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/toefl_test_preparation_books.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_off0000c31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC31B 5000 bytes
SHA-256: fe762d207e8e71af2e394e9582206c60fbb99b75bc84a9103f5ece01a3cb01b7
font_01_sfnt_off0000d41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41C 11236 bytes
SHA-256: 50a8a11ea6cf8b243cc96d2ed74e1a00cd62b2aa47aaa842a40629e3ee52fbf5