Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d2ac4a009437ce…

MALICIOUS

PDF

73.7 KB Created: 2020-12-16 11:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e66e7f1ebb370ebac111f5b6a786b408 SHA-1: ec6c549a6662f6116b3867b94caa04b50208fc0d SHA-256: 85d2ac4a009437cebffadc49dad15d6e9fe7cf89bd2e40cfac1ad3d68864b467
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a high ML score. The document body contains a large number of embedded URLs, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of numerous external links points towards a phishing or redirection attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=mordheim+city+of+the+damned+steam+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_5fc334f9a255a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413475/normal_5f9ef37eca36e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_5fbe5c033f28d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_5fd64fe37ce27.pdfIn PDF document text
    • https://disebaxixifos.weebly.com/uploads/1/3/4/7/134714932/duzem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5fa77fc4d08ed.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/jixeremipet/fafowenadodexunaritibonul.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/zirozaravilefof.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/bible_reading_chart_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/lifenezelevotafutesito.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/rig_veda_in_sanskrit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd6b1c8c741314323fec/t/5fc76d86788a962b7c2f8853/1606905225728/translate_english_to_russian_cyrillic.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/anchor_ravi_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/english_file_elementary_workbook_with_key_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/biodiversity_and_its_conservation_ppt_free.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_off0000d876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD876 5488 bytes
SHA-256: 007d3bf7a5b9c05fdb8fc04e64232dd5fe14504aef505bb084fcff98a9e68d6d
font_01_sfnt_off0000eb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 15256 bytes
SHA-256: 59e1c77dc7eca9f37177855d9f969567b966d60735d6689db8e347faaf121d6c

Open this report in the interactive analyzer, or submit your own file for analysis.