Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d48d8e6394b179…

MALICIOUS

PDF

78.2 KB Created: 2021-02-15 21:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 63543ff7a186702e8bdb8235ece84e69 SHA-1: d486b2babb0df3d38019ffa050f713d0b3a138eb SHA-256: 58d48d8e6394b179f2a18f7204f729cf3f1be193fadf1ce08648f834e2008479
184 Risk Score

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
  • 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 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.
  • 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://yafferge.ru/123?utm_term=retractable+baby+gates+for+dogs In PDF document text
    • https://cdn.sqhk.co/duponetix/Jgghe58/buvif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492240/normal_6004bfcfccca2.pdfIn PDF document text
    • http://totalcreditreport.info/dovuxowofugodika17h92.pdfIn PDF document text
    • http://neuroncraft.online/57357190917qo89v.pdfIn PDF document text
    • http://vivadoctor.ru/tumejugababedutemds8u8.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/frgihf0/97297724394.pdfIn PDF document text
    • http://esportzmlevent.com/choi_chicken_invaders_5_onlinefynze.pdfIn PDF document text
    • http://xaxikobovivo.22web.org/99103460758.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475729/normal_600d6b6e6dde1.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/genedesowul/gozojolam.pdfIn PDF document text
    • http://xesepodine.rf.gd/tokyo_ghoul_re_op_piano_sheet_music.pdfIn PDF document text
    • http://tudibakigar.epizy.com/sabosabujekoxoxivaxu.pdfIn PDF document text
    • http://wilafavibu.rf.gd/baal_veer_3_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/pathology_lab_management_system_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/73993731793.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_off0000f671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF671 5440 bytes
SHA-256: 9375c613d28a2770e3912af5727ff8586ad5e73dd1920bf2287f8af6a5f2b911
font_01_sfnt_off00010906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10906 10412 bytes
SHA-256: 4c3a3739b7c32cb59063696d63fd6d4cb46fa0b1b93d3de62f40ff5f95a34636