Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06841a6b1f378e8…

MALICIOUS

PDF

77.0 KB Created: 2021-02-23 14:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7141975435a66e3082b79a19ea37c48d SHA-1: 27960c05a6106dd06f49b877da13950291c0a8e7 SHA-256: f06841a6b1f378e8c6051679f77961407f7c7606c346ff8b45c94f1c1c787b85
154 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to 'https://yafferge.ru/strik'. The ML classifier and ClamAV detection strongly indicate malicious intent. While the document body is heavily obfuscated, the presence of malicious URLs suggests the file is designed to redirect users to potentially harmful content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://yafferge.ru/strik?utm_term=verizon+router+dhcp+settings In PDF document text
    • http://dream-stat.ru/nipijos9z2z3.pdfIn PDF document text
    • http://imm-shoes2.club/13848425451g1arm.pdfIn PDF document text
    • http://fezibinuzot.iblogger.org/40846227434.pdfIn PDF document text
    • http://uniques.space/894344593734hwy5.pdfIn PDF document text
    • http://wonder-ita.fun/android_bitmap._createbitmap_return_nulljd6q6.pdfIn PDF document text
    • http://presentinsta.site/96312537675j92yd.pdfIn PDF document text
    • http://i-men.ru/fozolusezemubilustbmc4.pdfIn PDF document text
    • http://nulonelam.66ghz.com/carista_pro_apk.pdfIn PDF document text
    • https://karinavoru.weebly.com/uploads/1/3/4/0/134017817/jamorezelakunesevu.pdfIn PDF document text
    • https://fubupudixad.weebly.com/uploads/1/3/4/7/134742266/1786862.pdfIn PDF document text
    • http://francobusiness.com/subox1uxww.pdfIn PDF document text
    • http://creamwalls.space/mapamundi_para_colorearwhmjn.pdfIn PDF document text
    • https://dakufosaxem.weebly.com/uploads/1/3/4/7/134771611/sixipumedenu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nogibusap.epizy.com/ligewawawilozapojap.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/19954102153.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/7861307372.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/46609462951.pdfIn PDF document text
    • http://bapomel.epizy.com/kitchen_interior_design_website_templates.pdfIn PDF document text
    • http://nijetazum.epizy.com/pokemon_blazed_glazed_full.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/80939232252.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 5108 bytes
SHA-256: 3e74cf3a3813a00368b9a3db78f90b99e7c70e1fff7caadbceeff9c295774841
font_01_sfnt_off0001034a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1034A 10568 bytes
SHA-256: 6263584e1e0840be7fe45206c83404a02a463755592eef07a21c490364c9dd24

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