Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efd708941d6f1c7…

MALICIOUS

PDF

66.3 KB Created: 2020-12-08 12:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 319abd0aadb5487bcdf92a68aca76374 SHA-1: 6fb61d4f7c94f3455b2061a5d2bf9ed682581980 SHA-256: 6efd708941d6f1c76dad6b6a0508971350887981c885acd1bb9938d5421a0baa
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of credential phishing. It impersonates Gmail and contains multiple external links, including one pointing to a redirector hosted on weebly.com, which is a common tactic for phishing campaigns. The PDF likely exploits a vulnerability to execute code or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdf.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=compare+and+order+rational+numbers+practice+worksheet PDF link annotation
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_5f945f56e075b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388841/normal_5f914ffb6f11a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411932/normal_5f95bf7aee3a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5f8d81ace10c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_5fbd77b52c99a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f9cf4e16bbc1.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/19bf8dce-a95e-48b8-bd85-38b0847c76ef/25875452668.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55249c6d96458363f68a7/t/5fcf3bca3fa051062b4338f7/1607416779227/bird_of_paradise_flower_plant_zone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b4152a0-8aea-444b-9722-38785d07a648/zoditisipatizamisojite.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf45c00f7af3919d2c79f/1606218844745/91437843706.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D8 5512 bytes
SHA-256: f768484ce2eed63845ee47b03e14936cd948a35113e16bdb5288b366edb9b383
font_01_sfnt_off0000d76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76A 10840 bytes
SHA-256: 9a4fc97ed916418a2cb308cd825bffb9506654cf1a14518813810c403fff1c2a

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