Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ead323fe203c40f…

MALICIOUS

PDF

69.1 KB Created: 2021-05-22 21:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: cc5d8df1a2f82af1ee176f8dd8758344 SHA-1: 4812fb4ab35ecd5d1ee1efc36a5d08a05d99e1b5 SHA-256: 0ead323fe203c40fb97e2075225ce860cc911cd647a19c723645d1675199a718
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting an attempt to manipulate search results or distribute content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://seumenha.ru/strik?utm_term=vw+routan+2011+owners+manual+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473638/normal_60254ff04b0cd.pdfIn PDF document text
    • https://fawewunukeni.weebly.com/uploads/1/3/0/7/130739651/dilasarozaveguwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5fd17576e12b7.pdfIn PDF document text
    • https://tuwureliw.weebly.com/uploads/1/3/4/1/134108737/b279f5d.pdfIn PDF document text
    • https://pobexapuze.weebly.com/uploads/1/3/0/7/130740180/vutemej.pdfIn PDF document text
    • https://wujipomazoki.weebly.com/uploads/1/3/1/3/131384492/4845732.pdfIn PDF document text
    • https://dumidonawusirug.weebly.com/uploads/1/3/5/3/135306770/9b7edffdbc5.pdfIn PDF document text
    • https://bosubunu.weebly.com/uploads/1/3/4/6/134693877/fufenuledo_tipabubejurawiz.pdfIn PDF document text
    • https://pokotozumunas.weebly.com/uploads/1/3/1/4/131453498/gefonufad.pdfIn PDF document text
    • https://wozexofinudere.weebly.com/uploads/1/3/5/9/135984457/wirorajidisimup.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/wuxupewu/ezekiel_saw_the_wheel_way_up_in_the_middle_of_the_air.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/xalojaxokafane.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/the_21_irrefutable_laws_of_leadership_facilitator_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/8039640621.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/noxikewuzuwumobafatazejus.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/how_many_harry_potter_lego_sets_are_there.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/zulotaveris.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/baidu_spark_browser_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/xitigoron.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/36040153241.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/jawijiwanikawaxigabowed.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/81506046586.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/ubuntu_16._04._6_desktop_32-_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/price_difference_between_model_3_and_model_y.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_off0000ceeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEB 5356 bytes
SHA-256: df16000e9b84125cda3d5447f2b898c5fa377f052b38a7a0c2929f27952dffad
font_01_sfnt_off0000e11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11B 10568 bytes
SHA-256: 41124d00bea4426dc6d528d1022b9af4af41f973539adbba7d9fa2eeca44eacb

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