Malicious PDF — malware analysis report

Static analysis result for SHA-256 b479e50624a63589…

MALICIOUS

PDF

67.2 KB Created: 2020-11-25 15:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 69c6258a97756c65b889d3227867f495 SHA-1: 157b9229c07f5dc6f23388971f5ec1477b74982b SHA-256: b479e50624a63589afc3cb17e44954eeef2d22949a802e18f46eb5c9790f0d7f
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL that leads to a suspicious domain, likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'navy dress blue rating patch placement'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=navy+dress+blue+rating+patch+placement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f9ce5a43b416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388041/normal_5f9bfbf42ca10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f9afe924d5ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461748/normal_5fa6d684225cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475016/normal_5fb6845ed72d5.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/75a91bac-0ed2-4965-89c8-dac60c66b505/smash_bros_ultimate_demo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c864c28-5079-49b4-86ae-95bcf762bed5/juxutazumezirisoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/welakuruvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2aafa07-496e-4f53-8fb5-e3656e9b52d3/minecraft_2_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc564774-5fb8-48b4-b175-5f48e8bea049/55288880331.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/kitibemigumogisetisal.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/camera_apps_2019.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_off0000c7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DA 5756 bytes
SHA-256: d7448faddfee5473e1d361964902582275ca0452b2a70e9499218d4e96da3b10
font_01_sfnt_off0000db57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB57 10808 bytes
SHA-256: 056c375f0ee7baee6c35a743cbbeeda74dd907b61514f2772b07c9193ad2d5d9