Malicious PDF — malware analysis report

Static analysis result for SHA-256 a958ad7d2667fe04…

MALICIOUS

PDF

70.9 KB Created: 2020-12-18 22:41:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 02d819df0a1c292791dd6d6ab6584147 SHA-1: 910c5547ee6de9f4cf433894c1635e2bbecae2a0 SHA-256: a958ad7d2667fe04ac5658a788d97c85a9b18aa837708fb3148655e99bb04394
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=calendar+for+july+2019-june+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5f9e2e6a26a52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485322/normal_5fd076191d6bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_5fb479654b732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5fb594ba9a8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f899ec47b6c4.pdfIn PDF document text
    • https://pusurezifokuni.weebly.com/uploads/1/3/4/3/134317864/6807339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8df341c545e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414680/normal_5fc79172cbaba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451039/normal_5fd3552a9867f.pdfIn PDF document text
    • https://bipikive.weebly.com/uploads/1/3/4/3/134342269/vunolurugijejet_desagajoxu_zefot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5fd254418bc0b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdcba3c92f0e27cb84b8f30/t/5fdce4dcda78d90a081ae259/1608312029312/kawomolebolegime.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/32685841033.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/87904655124.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55349be9b6939512836e1/t/5fc636bfa97599144eccd4e6/1606825664904/70351962825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ca8bc8-4a1a-4b21-86d9-c7518b1bdc07/22257651624.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_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 5320 bytes
SHA-256: 49b5626e49886d7e20991e2bfb845d8c36d078bbfd528855b70185f388042c33
font_01_sfnt_off0000e94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94B 11152 bytes
SHA-256: 0088e99d2fce519b2c2e2607d05df503a4de34c7fc4e934acfdaf76fe6d9616d

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