Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bcf58bc684ad5f7…

MALICIOUS

PDF

71.8 KB Created: 2020-12-30 07:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bda6bb24d47b9e074df1ec49c1843f03 SHA-1: 7d7addffe537b20276242d731e84b9cb49c594a2 SHA-256: 6bcf58bc684ad5f771ec7d1109e67b167115f2e761994ce80474a24f9de06b99
214 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, suggesting a link farm or phishing attempt. While no scripts were directly extracted, the presence of numerous external links indicates an attempt to redirect the user to potentially harmful content.

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://ggtraff.ru/strik?utm_term=used+men%2527+s+ice+hockey+skates In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5fb4ff4101317.pdfIn PDF document text
    • https://wajigigo.weebly.com/uploads/1/3/4/5/134588105/9024434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453344/normal_5fe12430a6150.pdfIn PDF document text
    • https://legufita.weebly.com/uploads/1/3/4/8/134866723/e5e22d7c5613d2.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/uVhg1jg/zombie_tsunami_promo_code_free_2020.pdfIn PDF document text
    • https://temonobulap.weebly.com/uploads/1/3/4/5/134592988/f315874f2fb59bd.pdfIn PDF document text
    • https://cdn.sqhk.co/mutexeze/JvYBUgh/vomero_5_sp.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/4hgdGkA/warlock_necromancer_5e_build.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/TuZBgUz/slackline_amazon_uk.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/pukaridimupo/getupefixedefasudoxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/google_drive_login_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/editable_blank_family_tree_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/fotututeb.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/disgaea_1_complete_ps4_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/why_we_use_breather_in_transformer.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_off0000dc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 5240 bytes
SHA-256: 9720d8fcc34c93846c523aeeef43a8ce45534311cbc1c1ef08d8af8aded26a63
font_01_sfnt_off0000ee4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4A 10428 bytes
SHA-256: b5aca4346efc9231b87394258a954ece2b118d8f867d353ee0f663e91cc74a58

Open this report in the interactive analyzer, or submit your own file for analysis.