Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e1ad628474de1c…

MALICIOUS

PDF

77.7 KB Created: 2021-03-17 04:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1cd5aa09d603e1628bf90a59bb35e8d7 SHA-1: 1578df9b9c2506b75ff860003f5b210aca593060 SHA-256: e8e1ad628474de1c5505a53d5fde80093facc10f8e3a9d49291eb7baa807c779
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a potential link farm for SEO manipulation. One of the primary external URIs, 'https://jumiwimov.ru/infin?keyword=le%25C3%25A7on+orthographe+cm2+pdf', is suspicious and likely leads to a phishing or malware distribution site. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-10044375-0', further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/infin?keyword=le%25C3%25A7on+orthographe+cm2+pdf PDF link annotation
    • https://junezemojevav.weebly.com/uploads/1/3/2/7/132740237/manibavoposuju.pdfIn PDF document text
    • https://volamajujidek.weebly.com/uploads/1/3/4/6/134667755/6884822.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/cYjjigw/love_letters_kc_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/hhididD/xanevixopotopu.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/hcjZg8t/98154849773.pdfIn PDF document text
    • https://viwitilabepimep.weebly.com/uploads/1/3/2/6/132695477/basiwirelijepuniwud.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/from_common_sense_thomas_paine.pdfIn PDF document text
    • http://juwoniki.getenjoyment.net/60252651663.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/dutimajizowa/43566887029.pdfIn PDF document text
    • https://d64d5b41-a66a-4b78-b87f-0feaf8e9cf76.filesusr.com/ugd/cf1aed_dad8f07530b748138bf51bb46e0402f5.pdf?index=trueIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_909ea63ce9b74d8f866b3a72b6b1d36f.pdf?index=trueIn PDF document text
    • https://d5cf7a15-73c9-49c9-ad57-d4f0303abb0c.filesusr.com/ugd/0d002d_9fd3e15a08074bd2866b44d1de2c5bcb.pdf?index=trueIn PDF document text
    • https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_0c41cb919c9a4da89bcf7be6ae38805e.pdf?index=trueIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_a6d34195a6404dc7852cf7addc9d9e81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widuxade/vawavifemobofitonuwereze.pdfIn PDF document text
    • https://52431b39-7396-4b0c-bcaf-ab72d449a1bf.filesusr.com/ugd/f8cef3_1c7cbb52146f41c6b5ba40216f8ceeed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/resixexi/breakup_status_video.pdfIn PDF document text
    • http://xobibaga.myartsonline.com/tijojumowakegixotaru.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/web_template_html_code.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_ab7013a8954d4d0ab9487d54e5a9787c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/bar_rust_235.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_off0000ed0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 5612 bytes
SHA-256: b50d279bc75b0eff1c06bb90cbcf1e093237ceea01f5d83427d46646d2a557d6
font_01_sfnt_off0000ffc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC6 12480 bytes
SHA-256: f78764dbcf1bb7a39d01de1a2d59c9914a79145143e0a917294e1034bc0dc7a8

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