Malicious PDF — malware analysis report

Static analysis result for SHA-256 832d208d4f223985…

MALICIOUS

PDF

66.5 KB Created: 2020-11-23 00:04:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 97ed8bdcf796486d5a239cc2074c37a7 SHA-1: 837cfb64112e5846f54a6cfef96c1cf4ee5e14e9 SHA-256: 832d208d4f223985c6dbd0f1e80699ce806c9ebc9e60de7c2fb1067fe03dd27d
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a phishing lure or a redirect to a malicious site. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing attack.

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/123?utm_term=what+is+historical+context+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5fa1c7dc3ef89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428342/normal_5fbadf72a1473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445879/normal_5fa1aa46a0c72.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/0b5261fc-a6fc-48f1-91ba-d397387271c9/muropomozerilano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc306b9-7e61-4c56-a386-7586965fe4aa/economic_liberalism_ap_euro.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/retroarch_ps3_dex.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/cambio_climatico_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/mother_of_the_bride_hairstyles_for_short_thin_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61bec0f7-09f7-4d08-99c0-90021ff01f7a/22036403817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90e6dfaa-643c-489d-babc-1ddcae270087/essential_university_physics_volume_2.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/8033143314.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/91539198753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a234a026-e30c-4d50-ae3c-d2bfe5a7bda8/my_hero_academia_episode_68_release_date.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_off0000c8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BF 5060 bytes
SHA-256: f25c82d3e689a5fee595b2fe3b530db532cd32636504a065e779a0f18b51763e
font_01_sfnt_off0000da0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0C 10284 bytes
SHA-256: 13dea94c9464c7219bc9dcdd86f285e174d35594c44367ef9a0c9419b34bdb8d

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