Malicious PDF — malware analysis report

Static analysis result for SHA-256 32822c930b62e0ea…

MALICIOUS

PDF

70.9 KB Created: 2021-02-26 12:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f6f396be6a98de74ea46efbda0b2c761 SHA-1: 25c6985c67857124705c9bc3e1f1c22f5c1a84a9 SHA-256: 32822c930b62e0ea2108b52bed50456658969b61940550007177a02905a272c7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on Weebly and other domains, suggesting a link farm or SEO spam campaign. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/award?keyword=how+to+calculate+the+pump+flow+rate PDF link annotation
    • https://dutumeparozawa.weebly.com/uploads/1/3/1/1/131163590/zujifugazopegafabobi.pdfIn PDF document text
    • https://fekawuzode.weebly.com/uploads/1/3/5/9/135993312/8487029.pdfIn PDF document text
    • https://fadirepux.weebly.com/uploads/1/3/1/4/131438814/dagikenojeparasebeb.pdfIn PDF document text
    • https://pagafika.weebly.com/uploads/1/3/5/3/135339488/retodidunizejij_bikivorugu_biwidi.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/what_is_tcp_ip_port_for_printer.pdfIn PDF document text
    • http://hamsterbig.com/temizupovonelexafulixeviv6dyi6.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/what_might_you_have_if_you_dont_feel_well_answer.pdfIn PDF document text
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/taseso.pdfIn PDF document text
    • https://wetikifavuzimol.weebly.com/uploads/1/3/1/6/131606122/luneke.pdfIn PDF document text
    • http://pagebake.com/what_is_distance_displacement_speed_and_velocity7wp1o.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/56735708766.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/2020_julian_date_335.pdfIn PDF document text
    • https://mizunemaki.weebly.com/uploads/1/3/4/8/134850414/863743.pdfIn PDF document text
    • http://probmaka.tech/rumudelagikusespu70.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/tiniruru/limiting_reagent_worksheet_answers_with_work.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/64232224110.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/nulapifiraru.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/8852080732.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_off0000d9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D1 5128 bytes
SHA-256: 59a1af0fbb0d11c9ceae5555c47a253607119e29e43fc419aca01502c1a7601c
font_01_sfnt_off0000eb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2C 10404 bytes
SHA-256: 027728988bc9b75fa3ac9721827bfdd4685845f7351434ee20747cc17c9cfd64

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