Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a8248a907c0e52…

MALICIOUS

PDF

75.2 KB Created: 2021-03-11 04:06:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a793a55015133bdcd7d1694c873f7d8d SHA-1: e17441e8b9db640ab2ce1df3f21f29648b2336cf SHA-256: 05a8248a907c0e5250754c589c21fedb2b9cef36daac2ff4dbe0712e7a744d73
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=best+price+eu2200i PDF link annotation
    • http://digitalliteracyinstitute.com/72250604855zvfvb.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/what_is_the_difference_between_the_roomba_models.pdfIn PDF document text
    • https://xijivokabororix.weebly.com/uploads/1/3/4/8/134879859/bebobaka_bamiromilide_gipolisejava.pdfIn PDF document text
    • http://vitrinachel.ru/writing_argumentative_paragraph32555.pdfIn PDF document text
    • https://kadonomu.weebly.com/uploads/1/3/1/4/131454950/xenojaxabufetijol.pdfIn PDF document text
    • http://gukivuzijisuva.getenjoyment.net/87785634879.pdfIn PDF document text
    • https://debivozujorebol.weebly.com/uploads/1/3/0/8/130813616/fazopem.pdfIn PDF document text
    • https://lezojefob.weebly.com/uploads/1/3/5/3/135319065/8f98ba2d5a9d752.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/32912093144.pdfIn PDF document text
    • http://bedebatosisazov.22web.org/shingle_coated_roofing_sheet.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/kiriwotebomuzesujesulufa.pdfIn PDF document text
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/banizenabutaxaxab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bejuxufuvojofa.rf.gd/xegikifige.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/vebuxotaki.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/nojiwijo.pdfIn PDF document text
    • http://refowokewip.rf.gd/wakunavubepas.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/35583138873.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/argumentative_essay_on_school_uniform_should_be_abolished.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/drawing_a_topographic_profile_worksheet.pdfIn PDF document text
    • http://zimopup.myartsonline.com/zafipuvom.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/new_telugu_christian_devotional_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/paviginoloxalonijir.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CB 5008 bytes
SHA-256: 37c20fe5f47ff335faaef7085f447ec790094526ecc72423ef08247368f8beea
font_01_sfnt_off0000faf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF0 10656 bytes
SHA-256: c50cc69800c59cb4ceee76aed0f0a692f153b544935e5234142842d8c81605cf

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