Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7edaf331d7845d…

MALICIOUS

PDF

58.7 KB Created: 2020-11-13 16:55:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0bd34742602da1c2e6722a7ecb2a41bc SHA-1: d2b56ab02c85abcd0fae7d9e2323404ef2d35cc0 SHA-256: 0a7edaf331d7845dda8804e3ceda8c263f04e4b50c0ae7e89d39ac59791eb8dd
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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=where+to+find+soontill+relics In PDF document text
    • https://gogekelonirivi.weebly.com/uploads/1/3/4/4/134438841/nizinonid-gisezekex-kobitabif-lusos.pdfIn PDF document text
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/3822842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_5fa5b4f82b6f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5f93d221b648d.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/839319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_5f99a68986fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_5f98c06d0c806.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/5c9c94ec-276f-4437-94eb-7d824824c2da/juwesezubazodizug.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_off0000a806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA806 4912 bytes
SHA-256: 2e16239387f8357713fdf7e1b478f97f219641beba7499cf246531c2962c2832
font_01_sfnt_off0000b8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CB 10632 bytes
SHA-256: d192a353173f5b895e6f82c69204f544223349d727ab19d25c50d1ed755e9f47

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