Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a286c98b3be1e1…

MALICIOUS

PDF

67.7 KB Created: 2020-11-17 17:25:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 884cc84cdbbd52441d47188f89dd1de5 SHA-1: b69b8f208c41cd5a52268302e26874c0c09fbf41 SHA-256: e3a286c98b3be1e1e2f07d6128f9ab978438b01f70a29eeab078a1f432902538
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or distributing further malware. ClamAV and ML classifiers identified this file as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafftec.ru/123?utm_term=example+of+codominance+in+plants PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417214/normal_5f96d1d38f8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_5faa8728307e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5fa956fc03ac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5fad863c83827.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/6711581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481280/normal_5fad960015cbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_5f922b7408ca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_5fb3dad313d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f88a8eaeffe4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417123/normal_5f9eacfb14858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87fd399a315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f908b6fbba25.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/69e66bca-e633-4d06-9b2e-6a3765c56988/papa_s_wingeria_unblocked_games_77.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/tratamiento_antienvejecimiento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eac53e0-791a-479e-8772-3badb6b9cdf4/nofikadazesorafuxeka.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/61397555200.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_off0000cdf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF1 5228 bytes
SHA-256: 49f6512bb75f8ed3ff904fc78c2bf50698622ca13d52016f65b24ce8bda2958b
font_01_sfnt_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 9868 bytes
SHA-256: 1ba6f218b33f39f07ba70a33f43d7798ef8fbc399127830182bb0398be449ce3

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