Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e1bf7590d159e7…

MALICIOUS

PDF

65.4 KB Created: 2021-03-17 00:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 597efc14c78a6fc9232093d9a840391b SHA-1: 27430c6c49c2db4b65b969c0fcb6aa9396ff4831 SHA-256: e6e1bf7590d159e7791dbbc1455859ff2962d0f1145325956cb1d762a748741d
126 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified as a phishing or malware distribution lure. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to an obituary, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/wix?keyword=cindy+gilmore+obituary PDF link annotation
    • https://rakuwogu.weebly.com/uploads/1/3/4/8/134858672/namugozib.pdfIn PDF document text
    • http://tpdreport.com/mabusitigibdlil1.pdfIn PDF document text
    • https://lumejukotexute.weebly.com/uploads/1/3/1/1/131163930/635331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413244/normal_602bf0f195653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_60192ecd17a3a.pdfIn PDF document text
    • https://vixikubinimagap.weebly.com/uploads/1/3/3/9/133997110/7307367.pdfIn PDF document text
    • http://m-laskin.ru/us_army_field_jacket_patches7gfk2.pdfIn PDF document text
    • http://guitar.su/what_are_the_similarities_between_a_virus_and_bacteria8mr3b.pdfIn PDF document text
    • https://lijemokuw.weebly.com/uploads/1/3/4/8/134853622/xerijifiz.pdfIn PDF document text
    • http://paxezimusosesa.scienceontheweb.net/pefofag.pdfIn PDF document text
    • https://tuvaxijilitug.weebly.com/uploads/1/3/4/6/134668501/50474e305af.pdfIn PDF document text
    • https://votadewigul.weebly.com/uploads/1/3/0/7/130775387/c4254ae3108e.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/mefizupelurosedif.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/bhagavad_gita_slokas_in_tamil_audio_free_download.pdfIn PDF document text
    • http://fdvsefwfrw.space/51357346481mkjs7.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/firigugixujotov/3067906432.pdfIn PDF document text
    • http://ranitirunom.myartsonline.com/poguxadumibaxaturesuf.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/tazuvujixosor.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/77394452589.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/rakelopolulifizikigari.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_off0000c46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46D 5112 bytes
SHA-256: f31af9e20b0122cce6109a658af5996debfa123a93663728231fdeeebdc87a15
font_01_sfnt_off0000d5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BC 10780 bytes
SHA-256: 4bc72934aed2692f9cc2bb33097f4e1d210e4d41ef8c02ae565192db7ca2c45d

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