Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e928ccb6bb30d07…

MALICIOUS

PDF

75.2 KB Created: 2021-03-15 06:50:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5d480892e06c22db87ffd0327957ad44 SHA-1: 8a8fa1a1cbcf9f11ae501ded5066efa280267769 SHA-256: 0e928ccb6bb30d070a80b5ea5e32c3f91a029030f1cf251936672df20b1e9d03
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or directing users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/123?utm_term=gps+coordinates+format+converter PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388407/normal_5fe0e836c3ecf.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/eheZDNm/cool_school_ms_booksy_stories.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383452/normal_6004e0303aa2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478926/normal_60194fb2f0a97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5ffbeb86bd24a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495395/normal_60017808f39f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_602e3b1e08302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_6014529fd46f6.pdfIn PDF document text
    • https://lemapemoj.weebly.com/uploads/1/3/4/0/134040436/319dda44c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424364/normal_5fed3b6bbe5b8.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/jdd2hiV/what_is_dingtone._me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459321/normal_6037de4da9a55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386074/normal_60306c0ede6d8.pdfIn PDF document text
    • https://zulanamojo.weebly.com/uploads/1/3/1/0/131071117/desap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383680/normal_60018e5fa1166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383804/normal_5fea2c3c2cde5.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/heSRXUD/age_of_empires_2_expansion_best_civilization.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365591/normal_5feef9e520ae5.pdfIn PDF document text
    • https://sezenoxesakibek.weebly.com/uploads/1/3/0/7/130740551/lozij.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/ew15wUG/blocky_farm_racing_hack_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_751d797cf71744cc99b8983241a57d13.pdf?index=trueIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_aef9478fce0e48578015b277a9df9d5d.pdf?index=trueIn 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_off0000e90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90A 5360 bytes
SHA-256: acfde1df7ce788f2bf58cdd04beeb889cb01e61d39f552c9b925567322fc724a
font_01_sfnt_off0000fb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3F 10720 bytes
SHA-256: eb2a0f4feeef66bc0c92eeab03407d6945c1c6146302ee504436f3ab6a828bd5

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