Malicious PDF — malware analysis report

Static analysis result for SHA-256 229096f60bf9c988…

MALICIOUS

PDF

100.8 KB Created: 2021-03-24 11:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8790eb91476e14fed79887d6ff6e0c14 SHA-1: 3a9f6d6ffcbcb9e53a0065fde55c84090abf9013 SHA-256: 229096f60bf9c98877a1396e4802066c855314aee460bb143cf07e07809650b8
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO farms or to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of many external links suggests a phishing or malicious redirection attempt, likely initiated via spearphishing.

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/wix?keyword=peetz+colorado+news PDF link annotation
    • http://gixapedotamerow.mywebcommunity.org/34838954649.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/fawizilajapoperesuxufidam.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/gifiwukavuvevudafoko.pdfIn PDF document text
    • http://towonededuv.medianewsonline.com/12234920379.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/allen_offline_test_series_for_neet_2020.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/kabisebax/livijefanopanixuruso.pdfIn PDF document text
    • https://ecf1b359-4982-44d9-836f-7e6f5fec4aa1.filesusr.com/ugd/da15c8_3f2dafe9a1834613b1f1701e4ba15d6f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/97475650778.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/flower_duet_clarinet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/31661127382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06abffa-04eb-45eb-8f32-5a20ebc4b88a/7075752041.pdfIn PDF document text
    • https://c482eaa1-e3aa-4fde-9473-53ba98cc9791.filesusr.com/ugd/94322e_537b7b6d2fa54403954707c273fd5722.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9586cf88-43b2-420b-a35d-30eaac9b3f49/20558552386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9762001-31a6-4204-8390-ff30b26ee3ff/who_sings_lucifer_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/10602403211.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/fedex_tracking_id_lookup.pdfIn PDF document text
    • https://8aefc570-8454-48c3-bb63-d4d1067b7ce0.filesusr.com/ugd/5c9621_787c593ab2ac47e0ad40a93733def495.pdf?index=trueIn PDF document text
    • http://vidilig.onlinewebshop.net/authoring_tools_in_multimedia.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/84593985425.pdfIn PDF document text
    • http://baletax.onlinewebshop.net/andhra_jyothi_epaper_hyderabad_district_edition_today.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/malaria_test_report_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3068e30-0025-4b3a-8d61-2011a0d4e73c/lozurubokukejukabofemimi.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_off00014e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E97 5076 bytes
SHA-256: 5acc6d4a5229588fc8af9ee087bdc1208618408643972756a112cbd8913a58a0
font_01_sfnt_off00016000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16000 11320 bytes
SHA-256: 5d61fa5c307a6797b8d1c65da942c4778e39f52fbff1c349278e3891dfb3c8c5

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