Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0af58dc5cd9bf17…

MALICIOUS

PDF

73.8 KB Created: 2020-12-30 00:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 49937b806c04eec144e0e3a9fbff75c6 SHA-1: 10c6201f93972dc0d621bc9181379c89b3494aef SHA-256: b0af58dc5cd9bf17da8dd664df0b6972f4bbe3e21bc0599e3421d37e085ec835
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafficel.ru/strik?utm_term=hd+wallpaper+nature+4k+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366337/normal_5fe15582e93f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480736/normal_5fb7c2c188968.pdfIn PDF document text
    • https://cdn.sqhk.co/bewiviki/g92je5a/marsha_blackburn_family_photos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487184/normal_5fc747061ddab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453730/normal_5fe2fc11922dd.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/z8Abeid/wigan_rugby_league_1995.pdfIn PDF document text
    • https://lorovojiwu.weebly.com/uploads/1/3/4/3/134318747/6875903.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/lekelepowo/jasowukenidosi.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/strand_theatre_clinton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f473b32-f8b3-4038-9df6-e847714e446a/diwenusezidulawen.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/total_hip_replacement_precautions.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_off0000e5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 4980 bytes
SHA-256: ab2754a39a45a46b610f1965454ff7f30c9f37093f952f4aa65c728be5689142
font_01_sfnt_off0000f6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D3 10368 bytes
SHA-256: 07d9198bbeae52fa95b31b073d430438c7e4790d3d814ed5333e99be0df6880a

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