Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed8d9fda983f156…

MALICIOUS

PDF

69.2 KB Created: 2021-01-30 14:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5414dd907e0390eef9a6891f08ce1852 SHA-1: 9e0020c95f2775689cbe3efcce0921c2be5b4793 SHA-256: 3ed8d9fda983f1568e12a637f85334ddadf1c1279a1a14a96659e8e92b0c21a6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=oculus+go+setup+guide In PDF document text
    • http://vvinorama.website/tobobalukogugodulonevbarst.pdfIn PDF document text
    • http://igbusinessabouthelp.com/get_views_on_story_instagram_apk95qwj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387430/normal_5ffbc1015cebf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470703/normal_5fe44620155db.pdfIn PDF document text
    • http://importants.space/xiwasazuretagtb7xu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_600fad2542174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473039/normal_600bd19648dd9.pdfIn PDF document text
    • http://pro-komp-master.website/the_aryavarta_chronicles_govinda_free_downloadjytgz.pdfIn PDF document text
    • http://nevodoma.iblogger.org/19536846620.pdfIn PDF document text
    • http://fesadivu.iblogger.org/25644586918.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jomewuborova.rf.gd/fuduroganulukelurelixax.pdfIn PDF document text
    • http://zadagudigewe.rf.gd/glitter_texture_illustrator.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/does_metformin_er_help_weight_loss.pdfIn PDF document text
    • http://disorasejazamu.epizy.com/infrastructure_as_code_kief_morris.pdfIn PDF document text
    • http://bosulug.epizy.com/84414104063.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/mixedadotebon.pdfIn PDF document text
    • http://xafafomuripag.epizy.com/47909902198.pdfIn PDF document text
    • http://zerekigukazaja.epizy.com/44111792167.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_off0000d4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A2 4964 bytes
SHA-256: ae5c61c6d44259ff524b7d8b4d364b6966a4c0fd84f78039e0f4c2f63cf7a4ba
font_01_sfnt_off0000e59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59B 9984 bytes
SHA-256: 4662c519531d067f8cc435980f8646d95db097011dd57310350de40ef61be432