Malicious PDF — malware analysis report

Static analysis result for SHA-256 517c67edb0a96be9…

MALICIOUS

PDF

61.9 KB Created: 2020-12-07 12:38:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5a00d9861f1064c72bf410a5090006a0 SHA-1: 1d405ccbd44dce3b2123be95c38b8ae915d645ca SHA-256: 517c67edb0a96be9b9a0f8b972a8861906cfbd40307c5c37de597db1386c817b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of embedded links suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/aws?utm_term=bandit+eye+mask+template PDF link annotation
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/4604915.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420610/normal_5fccfd96a59c5.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/a1012dd3-0bcb-4578-afa8-bc07400c5481/xejonejopuwebevu.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/dobolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee055589-a652-40f9-861e-ac4a005c5644/brother_fax_machine_4750e_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72521126-d1a3-4c76-8d1d-d511a2e186d4/est_to_mst_conversion.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7fbe9fc3622d5227cd2/t/5fc17299cb3e0f5771866a37/1606513306190/nucleic_acid_biomolecule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c01f988-e0ff-4429-b715-1c754faf9437/ramexidikoditibanif.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/information_booklet_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13debbd14ff0dd29efe80/t/5fc50dc1eaf37e3b643c3931/1606749633989/seadoo_spark_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d0065e8e827d428d60b5/t/5fc2fa91f81c9a2a0c04b6e0/1606613652279/avatar_la_leyenda_de_aang_temporada_1.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_off0000b59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB59D 5224 bytes
SHA-256: 47bba13760bb2cda1ffb98d78841ea97362fd549e3455e4e436fa37b32ac9760
font_01_sfnt_off0000c762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC762 10476 bytes
SHA-256: c8261720e2fa65dafca3894807015b6c579b6f1182b98d38208cd065e7cf5bc4

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