Malicious PDF — malware analysis report

Static analysis result for SHA-256 09255d44a736b5a5…

MALICIOUS

PDF

83.4 KB Created: 2021-02-15 11:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6867ddd430121e978a0569b1d9e47d98 SHA-1: 76da30abe1a2a44c79d6db4718595e1b9161b3ec SHA-256: 09255d44a736b5a5413878fc6191913dee48fc96a28cce2d952029223628a3f9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous external links, with one pointing to 'https://baarspo.ru/123?utm_term=historia+de+los+derechos+humanos+en+m%25C3%25A9xico+resumen', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to human rights in Mexico, likely to trick users into clicking the malicious link.

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://baarspo.ru/123?utm_term=historia+de+los+derechos+humanos+en+m%25C3%25A9xico+resumen PDF link annotation
    • https://rerupogom.weebly.com/uploads/1/3/0/8/130874691/lufumav_nafub_komujomanakise.pdfIn PDF document text
    • https://jefaxuler.weebly.com/uploads/1/3/0/7/130775921/majinizigin_wenete.pdfIn PDF document text
    • https://rowusebejaron.weebly.com/uploads/1/3/1/6/131637242/319136.pdfIn PDF document text
    • https://wisukasef.weebly.com/uploads/1/3/1/4/131453855/5723521.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/5ggDzjf/98042007945.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/wDbxChb/war_dragons_forums_app.pdfIn PDF document text
    • https://baneboveboxov.weebly.com/uploads/1/3/0/7/130775782/pisigeviwogolej-kowavavavila.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xefejevife/85609244607.pdfIn PDF document text
    • http://sanikivatuma.rf.gd/blank_space_song.pdfIn PDF document text
    • http://fidazel.epizy.com/76337871735.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/77241086979.pdfIn PDF document text
    • http://nenilezum.epizy.com/bharathiar_university_books.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/56333059496.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/id_card_making_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/calendar_invite_outlook_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/91385556988.pdfIn PDF document text
    • http://jipokogave.epizy.com/60119877348.pdfIn PDF document text
    • http://fanodawenu.rf.gd/wedotebewusopiwozarol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93C 5232 bytes
SHA-256: 58ee5fa319c6d24946fed60e0c81faf818eae530e9cdb05b4fb53c69c2d2c9d4
font_01_sfnt_off00010a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A89 11208 bytes
SHA-256: fb326d860affcdbd547e8452e23e67e5a175ae3c23e8803811e315b16c95bee1
font_02_sfnt_off00012f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F20 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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