Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1247738c2a4285c…

MALICIOUS

PDF

62.4 KB Created: 2021-05-10 06:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: fd17d4b3c31a7b96088fe230de519e1e SHA-1: 26834901432042755ca4f3ad61a67b2692039499 SHA-256: e1247738c2a4285c5dc7d6c293106a1527a10a62fd444e50305390533bf761a4
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, many of which point to PDF files on suspicious domains, suggesting a link farm or redirection scheme. The embedded URL and the document body's deceptive title indicate an attempt to trick users into visiting malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=discrete+probability+distribution+function+excel PDF link annotation
    • http://cheeronthemove.store/kedalodulabuxv9ee.pdfIn PDF document text
    • http://zavodtriumf.com/bulova_marine_star_blue_facerqljg.pdfIn PDF document text
    • http://zapixexarepol.medianewsonline.com/acrobat_pro_vs_xchange.pdfIn PDF document text
    • http://easycreditscore.info/grindstone_lake_mn_fishing_reportcs893.pdfIn PDF document text
    • https://modemogip.weebly.com/uploads/1/3/0/7/130776314/0d6bd1ee5866c.pdfIn PDF document text
    • https://zevenilusowaj.weebly.com/uploads/1/3/4/3/134324486/b721843.pdfIn PDF document text
    • http://ukranews.site/test_para_la_licencia_de_conducir_en_la_floridazl0xg.pdfIn PDF document text
    • http://gizovivomiz.getenjoyment.net/vikilegisejibok.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/zovijif.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/moduxanakuri/13280690764.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/kuxopozobekukuvike.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/2008_jeep_jk_unlimited_x_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/warehouse_risk_assessment_template_free.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/causes_of_breast_cancer_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/what_is_difference_between_de9_and_de9c.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/ropexuvotaxubes.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_off0000b94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB94F 5456 bytes
SHA-256: 26ff91b7964f88eb24d8d56365ae2c797781b4703d58b57fb857f926bcb4001b
font_01_sfnt_off0000cbfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFA 9536 bytes
SHA-256: 76a2fedd79e15b989224fc66368feca565aec79a119494775666106ce10f2001

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