Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d99c00772828b7…

MALICIOUS

PDF

63.3 KB Created: 2020-12-07 14:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: eabbae5a7a244054f2a3bab3e0f9287d SHA-1: 58f2cbc00fc1c85172df8017e68919a24e82ba57 SHA-256: 06d99c00772828b79f938ac5f0b6b897f68cae4468e05d0f2b72b4e9453a2efe
156 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, suggesting it's part of a link farm designed to redirect users to malicious sites. The embedded URL and the heuristic findings point towards an attempt to exploit users through deceptive content, likely leading to further malware downloads or credential harvesting.

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://traffset.ru/strik?utm_term=xc60+manual+transmission PDF link annotation
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/pejixolexedij.pdfIn PDF document text
    • https://fukoxifixe.weebly.com/uploads/1/3/4/4/134460993/pugefudukamurovenox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f8eccb477eec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423699/normal_5fc8da40754db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373304/normal_5f9f8c1fe1be8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489042/normal_5fbc91da8b0c2.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/zidosozawok/96836664145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ba82df7-b384-4c01-bcf4-1ec20db356e4/honda_vfr800_vtec_service_manual_dow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc5ced7-ca66-40e0-ab82-a09e76dd7c2b/hypixel_skyblock_resource_pack_pets.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/47972485668.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/craigslist_roseburg_or_garage_sales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc7aaed7-cddb-47d9-8b9c-40157411171a/vupimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/579e5ee2-86ec-4cf9-b9ae-c01b49ce7c0c/chapter_3_oasis_guidance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/avondale_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/60790329664.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_off0000bceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCEB 5220 bytes
SHA-256: 7d392ebfa2a40f3645e31008a030a09dfc7afe8cf6efc0e0b9a761a7a4053ae8
font_01_sfnt_off0000ce85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE85 9916 bytes
SHA-256: 4e103be60fab87bf29f42ae1cbce937c9a99332fd334d6a2524f2dc54dcbba75

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