Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38ea7562f3db8c2…

MALICIOUS

PDF

99.3 KB Created: 2021-05-17 23:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2b07eba49104543c7692c42a3d158b84 SHA-1: b56d1de75bee349969b48ed209b9cc56edd62add SHA-256: f38ea7562f3db8c21c4195111b19fcc6d3f1a3fed459eb910cee0058792bde86
214 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://crophysi.ru/strik?utm_term=cancionero+de+boleros+para+guitarra+pdf`. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though obfuscated, suggests a lure related to a guitar songbook PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=cancionero+de+boleros+para+guitarra+pdf In PDF document text
    • https://lekemevegov.weebly.com/uploads/1/3/1/4/131410090/fewetapuwop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420915/normal_5fd97174180d9.pdfIn PDF document text
    • https://pamemigewoguvo.weebly.com/uploads/1/3/4/4/134438925/kekinamitof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459323/normal_600a24503fba1.pdfIn PDF document text
    • https://zogazakuf.weebly.com/uploads/1/3/1/6/131636678/futosogiferopafixol.pdfIn PDF document text
    • https://pimelitapata.weebly.com/uploads/1/3/1/4/131454500/c958ab9092be.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/jepinebawo/cv_template_for_assistant_brand_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a8cae5-3cb2-44bf-a76b-88a38283fa87/51959896204.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/minecraft_bedrock_edition_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/xifapevobagapowex.pdfIn PDF document text
    • http://fufibilola.epizy.com/wagit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9dd115-0f10-4609-b3d4-3f8107a25633/saeco_incanto_s_class_deluxe_espresso_machine.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/39089227189.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/zejidokolamugupadek.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/construction_site_audit_report_template_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/bahut_khoobsurat_ho_song_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa0c8b98-3b19-4916-b3bc-e8121f1bf4ae/gaguwitotume.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/routing_protocols_book.pdfIn PDF document text
    • http://rinejifivazori.epizy.com/rockstar_free_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/preformed_elastomeric_compression_joint_seal.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC7 5368 bytes
SHA-256: dcef07afdb8488585f0b6f9dd9d4aa7489018bd69a10d019e0cd63b3062bda4e
font_01_sfnt_off00013f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F0E 13508 bytes
SHA-256: 1a187f3be160abb42fa68e4c2977ff8418d06301ff66f4a255421635fcd21bbd
font_02_sfnt_off00016a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A90 16076 bytes
SHA-256: cb07af63cc967bc725defeb60e0f94def8eca5b79d09fb04145a87b09fb96d38

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