Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d9835c0b54315b…

MALICIOUS

PDF

71.0 KB Created: 2020-12-23 02:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a944acb98a895a77033626b89b6a3373 SHA-1: 60f0ffe1f5dfbbb06b104d99068cda4f8fc5ed6b SHA-256: 97d9835c0b54315ba154ed6967a6fe174996fde6db395b79ecb9f9b98e420db1
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 and a machine learning classifier, indicating it is likely a phishing or malware distribution lure. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The presence of embedded URLs and the overall structure suggest an attempt to direct users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffmen.ru/strik?utm_term=toy+story+drop+game In PDF document text
    • https://gunajotigur.weebly.com/uploads/1/3/4/7/134738866/6988669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5fbec2f555455.pdfIn PDF document text
    • https://mupaxeruzu.weebly.com/uploads/1/3/4/5/134597089/c2a2a83af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405181/normal_5fde6c3949541.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28b9e6d6-6740-4056-ba52-b32105fe56e4/73664395330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe339b6-5dad-4cf3-919a-3f38fa8083b3/tifojagibugiwipej.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/free_of_who_moved_my_cheese.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/91091954923.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/74822692297.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/hallelujah_tabs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c4d3c30a162e0c73ef94/t/5fc5f621145a8629dc7eed07/1606809122234/super_junior_sungmin_marriage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27234eb1-e383-4635-a183-6ef9adc6b337/64705688023.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_off0000ce3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3D 5300 bytes
SHA-256: 693d7e87465c11438e27fc9b65c779ec4136a1d3b0eb81e7776c5617394618dc
font_01_sfnt_off0000e033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE033 14992 bytes
SHA-256: 51b2aee6554ba2f6bcddc7b35c672e8e9d628932e32d2a5e61abd58a1a737b72

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