Malicious PDF — malware analysis report

Static analysis result for SHA-256 532418c88ed618a8…

MALICIOUS

PDF

73.4 KB Created: 2021-02-26 19:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0a4cc5370cb1267e629808f1598f2a90 SHA-1: 578b81e61d2f609dc158722eb12f72d841a8bb53 SHA-256: 532418c88ed618a82cfba7516328a1bd20fc3454bf471d0848df13014255dc75
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 0.9998

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://jottigo.ru/123?utm_term=what+is+nationalism+in+economics PDF link annotation
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/tekabix.pdfIn PDF document text
    • https://wosapinilesodiw.weebly.com/uploads/1/3/5/3/135347506/4257343.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/dZD5rnE/lijodoxopesasilaxumurune.pdfIn PDF document text
    • https://cdn.sqhk.co/jadosoxiko/ghgiSjf/76019500046.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/2574a09dd52.pdfIn PDF document text
    • http://barivelovone.22web.org/pawajudumo.pdfIn PDF document text
    • https://noxolawozin.weebly.com/uploads/1/3/1/4/131452883/e2f6aebd147c0.pdfIn PDF document text
    • https://cdn.sqhk.co/remimuroku/hgcfvBd/saxegonepijubifibotelami.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/cMie05G/fofudizuwibopozezebo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xibaruj.rf.gd/99595626249.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/windows_10_free_upgrade_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/69175597496.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/template_slideshow_adobe_premiere.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/us_passport_renewal_form_from_canada.pdfIn PDF document text
    • http://wuxojawe.epizy.com/gnomeregan_classic_tank_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/11441542566.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/mla_8th_edition_annotated_bibliography_template.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_off0000e586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE586 4956 bytes
SHA-256: a00d080fec42a4cb64eeffed409b2de54786971ff85cbc1c0869e32029282614
font_01_sfnt_off0000f64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64A 10016 bytes
SHA-256: 2f4b4f2cfba0a1d6469e67a7296d3693b1395d33e98f14f648149a0d5d3a130f

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