Malicious PDF — malware analysis report

Static analysis result for SHA-256 766b28ab507135d7…

MALICIOUS

PDF

67.6 KB Created: 2020-11-25 15:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 59f7fbb63ee38a6e11fc30961e1bb9ab SHA-1: c78a395a458fd4e16d785dca2584c73faab0a2bd SHA-256: 766b28ab507135d757b4ec66bc96244c9767c1fdd973570db68b4f1e3885d314
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.8907

Heuristics 4

  • 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.
  • 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/aws?utm_term=path+dependency+theory+pdf In PDF document text
    • https://jimamejovegevag.weebly.com/uploads/1/3/4/5/134593921/690091cfae690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5f97ffe5a3b53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_5f8f644c4dea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_5fa3add40bdd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489992/normal_5fafd271e0802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384822/normal_5f92fc493c4aa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc418a8e-15bf-4625-8ea9-590b32ddabfb/28205857679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3e848e6-47bd-478d-8a74-99eb34e3389e/xaxedobafukafusukibapebiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f945b16-95e3-4ff9-b2eb-3886a62049a0/vufepesut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140489c6-5bbf-46e9-a00c-210821b4827c/14842078404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2492a7a-0726-4b06-811c-ff2576640342/wipuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2a520f-aa4e-4022-88c0-65fe4332cd05/asus_zenfone3_5._5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57007505-7f61-4bb4-a190-01d8dedb2316/jean_leatherman_sc.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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