Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8dfcf77a6ecde5…

MALICIOUS

PDF

63.9 KB Created: 2020-12-05 03:21:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5ec2ba633d62f780119266bf3786de20 SHA-1: 173af8729ee88b4bd64634ed4c6dac652b90dd9e SHA-256: dd8dfcf77a6ecde5898f50a4d494230874c0ef7ec2a1f8786754816a560d4839
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, including a critical alert for redirector links and ClamAV detection. The primary attack vector appears to be a link farm within the document body, designed to redirect users to malicious sites. The embedded URL 'https://traffking.ru/strik?utm_term=the+azim+steppe+aether+current+map' is a key indicator of this malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=the+azim+steppe+aether+current+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_5fbe01f02085f.pdfIn PDF document text
    • https://pudarafuweza.weebly.com/uploads/1/3/4/4/134479559/d4e30edc759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_5f926fe8c40ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_5fb4854678e7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5fc56a627f29f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405195/normal_5faed8ef4a130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fc1b964cc0a2.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/fa33fa26-8df9-4f85-b049-92297bb31455/jiwudobiwolobeliduxejuri.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36eb77848ba205d28ae0c/t/5fc9fd7d9bc93d20d9b31b0c/1607073151217/36440683414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02b9bcb-a90c-4de0-8010-8d5499c6f8c5/dayz_crafting_guide_ps4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37df8abb-e8ff-429d-882f-16d94cd40829/ernie_crab_house_bladensburg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10935108-da3a-4d40-b2b2-8e52b8624269/51241548950.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58e7fabaecd331841d8f2/t/5fc7cf71e6f2ed3f50db2f67/1606930289815/74858794180.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_off0000bd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3C 5140 bytes
SHA-256: 408e2afe28a420e7362f46a61e4e18051ab2af0df12be37d0ccea260e9139b6c
font_01_sfnt_off0000ce94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE94 10716 bytes
SHA-256: 61c7fadd745caace23285d0fd277626f27ed0b8f5fe5f8b561c8cba830eede09

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