Malicious PDF — malware analysis report

Static analysis result for SHA-256 276759b8d807df00…

MALICIOUS

PDF

80.4 KB Created: 2020-12-17 15:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cbc662f28c03bc740fe65abde32b6392 SHA-1: 3d1d4a2849f4ea944d954aa9edeea46a272ff1b6 SHA-256: 276759b8d807df0046d8fe16708302e77d1e67f14755f77c1c02dd119a3e26fe
156 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 0.9998

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/aws?utm_term=bhakti+song+2019 PDF link annotation
    • https://suzitarux.weebly.com/uploads/1/3/4/6/134683800/6705097.pdfIn PDF document text
    • https://sojomirolasa.weebly.com/uploads/1/3/4/3/134325131/3d476c.pdfIn PDF document text
    • https://sefufomoxuve.weebly.com/uploads/1/3/4/5/134528328/8630587.pdfIn PDF document text
    • https://wafulezejo.weebly.com/uploads/1/3/4/7/134748518/91fd8d309.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/latapamefaw_zedagu_soxeti_jufex.pdfIn PDF document text
    • https://xixafaxuxux.weebly.com/uploads/1/3/4/3/134340403/sinebupoj-wonuvabudevel-dovigemozufake-xadupufi.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/fedufiporara/88781676083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/506e7caf-3a97-4781-83fb-e13a30781380/8055990716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20499fda-d137-4053-9355-0c293e2b985a/distributive_property_area_model_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a1764f-4c66-49aa-a15f-36fbc67c2cd5/genes_xii_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/advanced_english_multiple_choice_test.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/japazim.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/birowodomaxiganurezaguse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d9962f-fc18-4c80-a8aa-2d64254fc35d/the_council_episode_2_soluce.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/eu4_hisn_kayfa_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd2fb785-1a6c-43f2-ae53-52120aa57423/68981898225.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_off0000ff24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF24 5412 bytes
SHA-256: 6d13370931cc661d1baa96ad291be6d9b54dc22a3cd8f847cc494c0348eba6b6
font_01_sfnt_off00011197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11197 10308 bytes
SHA-256: f768a931462aef7e0a6bbb3e6b319b7c7053758774d72a320d94627d0bf9db22

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