Malicious PDF — malware analysis report

Static analysis result for SHA-256 072cfdfd495c266c…

MALICIOUS

PDF

73.8 KB Created: 2021-02-18 10:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 80b05758318efe2ed054b9d5942fe5e1 SHA-1: ca2a9ba8064848c0314fc9783e5e389a6e3a25f4 SHA-256: 072cfdfd495c266cee2b49d2804ccfcfd24a024ddd039e07531f0f8516dfb18b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, suggesting a phishing or credential harvesting attempt. The embedded content, though heavily obfuscated, appears to be a lure related to search terms, aiming to trick the user into clicking the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=harrison+internal+medicine+amazon+uk In PDF document text
    • http://tcerkovniekupola.space/7657507476822ezj.pdfIn PDF document text
    • http://zumbayuliya.online/does_twitter_have_a_strategykgo5m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5ffbc503bf457.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466151/normal_5ff32f5f88063.pdfIn PDF document text
    • http://forsage.pw/coachella_beyonce_performance_full_videobow1d.pdfIn PDF document text
    • https://fizabawizusor.weebly.com/uploads/1/3/4/0/134000364/6631f.pdfIn PDF document text
    • https://sibozigoguxo.weebly.com/uploads/1/3/0/9/130969143/5721560.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5fe3c450dc365.pdfIn PDF document text
    • https://zepifuvuxetota.weebly.com/uploads/1/3/6/0/136095774/e94bc06fd99c.pdfIn PDF document text
    • http://farvestnn.ru/maxuvotijusekajegug7c6zh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_60282c6551dd6.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/furadunavo-tukogaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_600e8874a1da1.pdfIn PDF document text
    • http://ejqy.com/sentencing_council_guidelines_drugsydhae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414687/normal_5ff68505ddfa2.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/dujumosifdulf5.pdfIn PDF document text
    • https://bogigusojuvifu.weebly.com/uploads/1/3/4/3/134316749/d63b6f72ee7b151.pdfIn PDF document text
    • http://pogadai.xyz/one_piece_grand_battle_apkrtesb.pdfIn PDF document text
    • http://iglivesupportteam.com/37490265606la9wg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17A 5160 bytes
SHA-256: 212386aec6936fea415dd0717f89dd12373664b76ee79ab18c6b82a0569022f8
font_01_sfnt_off0000f2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F4 11572 bytes
SHA-256: 17371a6ef2471a69cb3756fcb95da1cb958e400199f3833dbbf778e6fcdf8d9a

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