Malicious PDF — malware analysis report

Static analysis result for SHA-256 960a47cad6c949a6…

MALICIOUS

PDF

74.7 KB Created: 2021-03-05 12:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d68222ef6a59eb032ff0b8ad459616c7 SHA-1: 50f77085e07af0ef484eabc83b4dddf75bf94c83 SHA-256: 960a47cad6c949a6122e95ed5b3c7293d5954c4e59e6300b4ca9967ae2e26e42
186 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/123?utm_term=anatomy+and+physiology+lab+manual+10th+edition PDF link annotation
    • http://fudabexusak.iblogger.org/motiduwivimexe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412413/normal_5ff2869ea0783.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401716/normal_5ff03e8c674c4.pdfIn PDF document text
    • http://vuvopogawuxaxax.22web.org/66223164391.pdfIn PDF document text
    • https://kutumamam.weebly.com/uploads/1/3/4/8/134893394/kilivasef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491426/normal_5ffda7df79fc7.pdfIn PDF document text
    • https://xiluxobafuju.weebly.com/uploads/1/3/5/3/135323992/07285456450daf.pdfIn PDF document text
    • https://didowivukosu.weebly.com/uploads/1/3/4/4/134470318/duvure_putivupadirus_gokegirod_xagilavowuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406241/normal_5fec8c18d22a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376629/normal_5ff69ed558e53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xenavak.rf.gd/96772842676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae5d639e-95a4-461a-9976-840c97b79412/lg_6.5_kg_front_load_washing_machine_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c70779-3628-4c99-bf1f-23622ec11949/36072757867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08bd7eb8-78ff-446b-9f32-4e7705d975ed/winchester_model_94_rifle_sights.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f7eb00-fa2b-4a24-bc6d-8352c301a751/twilight_eclipse_full_movie_download_in_hindi_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1504bf40-bcf6-478b-a1e5-e547049a7dd1/tulubadejumotisolijit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ddfe5d5-8633-4de2-b4e0-c9e9045e7d01/jivaluta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d072e4c5-93e7-4f7b-9dcc-333d185c81b6/54135396511.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_off0000e1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 5704 bytes
SHA-256: 728a892bf9abe40e811f3edbfa4f22372374d9b1253684c12d9174e103e09e6c
font_01_sfnt_off0000f515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF515 11492 bytes
SHA-256: 0596e82267291c6076a0ab7d096e74cd136611623ba88e346228e36c18163a5a

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