Malicious PDF — malware analysis report

Static analysis result for SHA-256 097451bfab0e11f3…

MALICIOUS

PDF

69.2 KB Created: 2020-11-25 23:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7ef9835a961915f504d89d1ae7021968 SHA-1: 35c9ed3834a1d99d6ba2478c4ba4df0f15fc0e83 SHA-256: 097451bfab0e11f332036c5cd52c4c9ae2a927a13d3013fdb9753d783e950208
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 financial confirmation templates. The presence of multiple PDF link farms and a critical ClamAV detection for 'Pdf.Phishing.Trojan' strongly indicates a phishing or redirection campaign.

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
  • 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=letter+of+credit+confirmation+template In PDF document text
    • https://lonodoxelu.weebly.com/uploads/1/3/4/3/134305804/3971303.pdfIn PDF document text
    • https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/wukujilivaxagu.pdfIn PDF document text
    • https://zosubidam.weebly.com/uploads/1/3/4/3/134316114/4455589.pdfIn PDF document text
    • https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/dafe627f19277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_5fab8c14a333b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f86f79e52b86.pdfIn PDF document text
    • https://giwedogifuj.weebly.com/uploads/1/3/4/7/134741463/pigubeg.pdfIn PDF document text
    • https://sebijulevezokoj.weebly.com/uploads/1/3/4/5/134512917/guridetezunix.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/mesixadelomomo/dtsd_home_access_center.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/heart_failure_guidelines_diuretics.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/50917973811.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/rogafimaziwixitubana.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/world_history_final_exam_study_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/24752922008.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_off0000d1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D6 5064 bytes
SHA-256: d6a0d4b1eaa352c4d2f91eebdf1e6c5c9c1a90d674f36ea3cebc73717100a126
font_01_sfnt_off0000e2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FC 10856 bytes
SHA-256: b9831835189e52da0a226a863ba2be36dbcd2c93195a6f3c5f92a99d1e315c0b

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