Malicious PDF — malware analysis report

Static analysis result for SHA-256 9beec803c49832c2…

MALICIOUS

PDF

66.2 KB Created: 2020-11-16 17:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 07454fa0ed3e579d6faa1689fe1a032f SHA-1: dbbedc71376f6bfb752ea630c92cb692c587f6e4 SHA-256: 9beec803c49832c228da979933f0dc434091bf4a194602d11da42d6ce36e9cf1
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to an English-Japanese dictionary. The presence of multiple PDF links and a redirector indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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
  • 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://traffking.ru/aws?utm_term=english+nihongo+dictionary+free In PDF document text
    • https://geguguxe.weebly.com/uploads/1/3/4/5/134513061/sepewenimufudo-fifuzaxis-bawawiguzegus-babaluvis.pdfIn PDF document text
    • https://gegovufefole.weebly.com/uploads/1/3/4/5/134520867/kenepo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5fb2894cefb17.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/3580089.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5fa74e2d021ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5fad440a624f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5fa4eca5d3440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f8d3eec478f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5f9176f5f2496.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/zurovajij/irregular_adjectives_comparative_and_superlative_list.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/57316968360.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/wupokekanofolodosufugano.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_off0000c772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC772 5344 bytes
SHA-256: 3a2e46466df4747ab46fb91dd37119bc9bc9932b1096f7b37b766bd4832b160d
font_01_sfnt_off0000d9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A9 10072 bytes
SHA-256: 34785eb14a906182ac44a7bbecdf16bcfd8f0b85f1e844a507b0514897a4af42

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