Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ff69806c5d67be…

MALICIOUS

PDF

60.3 KB Created: 2020-12-04 23:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e07c75db7892550591e93f52480b3ac8 SHA-1: e61cbcd387a023bc6ed8b5995abe2e23187ba33a SHA-256: a1ff69806c5d67be5f3558155ea94db43d7fa92a218dad3434a681ff67801421
244 Risk Score

Malware Insights

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

This PDF file contains a significant number of embedded links, many pointing to disposable domains and redirector infrastructure, indicating a link farm or phishing attempt. The presence of a malicious redirector URL and ClamAV detection strongly suggests malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/123?utm_term=goodman+racing+seattle In PDF document text
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/96e4d12dc.pdfIn PDF document text
    • https://disipewadapa.weebly.com/uploads/1/3/4/8/134870645/boroxera_bajalagotineguf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_5fb38b1be502a.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/5877cc01.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/nilovixolowuma_koxur_dovowokate.pdfIn PDF document text
    • https://fotizewuzawefuv.weebly.com/uploads/1/3/4/6/134668380/21cc1d7c6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f8aba57353c0.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/2b34abe251.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/9700181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f919bd5514a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f885c6919854.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/varolexexus/dadunekebuliwafowul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc38eca08845d0924f79f91/1606651594761/3455905543.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52053c6ccf69f3551823/1606373894417/wunisozoxanogusetebediva.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_off0000affb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFB 5292 bytes
SHA-256: 447a5c3a6ea906191772d98f152ecf615cef823d5535763462e7d46102bfd88a
font_01_sfnt_off0000c1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1DF 10212 bytes
SHA-256: c703191266de50d0ceaa4885d66d1e6fb577617a315c6ecd1ad74f52a2c579a0

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