Malicious PDF — malware analysis report

Static analysis result for SHA-256 4865b6936ca3c061…

MALICIOUS

PDF

81.3 KB Created: 2021-04-30 22:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 98ee5639e51826b72fd79459f0560075 SHA-1: b6f832fb161df551a335af38cd8013026142522a SHA-256: 4865b6936ca3c0617f0a306ff3e53e57e55f3f86c1faf6a0d3cf49fb0aecd588
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful sites.

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
  • 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://lozipotod.ru/strik?utm_term=minn+kota+riptide+trolling+motor+repair PDF link annotation
    • http://reduslim-italiaoficial.site/city_of_ashes_movie_201915y24.pdfIn PDF document text
    • http://ctuxuu.com/hamlet_act_5_study_guide_questions_ad1v86.pdfIn PDF document text
    • https://zokagagewawo.weebly.com/uploads/1/3/4/3/134346606/1472172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5fd6188d563d1.pdfIn PDF document text
    • https://xodebizig.weebly.com/uploads/1/3/2/6/132681497/podivuves.pdfIn PDF document text
    • http://obmenkalnr.online/609396402454fz9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_5fd271283ee9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419644/normal_600fe3693567f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465277/normal_60532506dedcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_5fe8b541b9e22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/afc14d47-366f-474a-b2f8-a0606e8526ed/490240929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9916fb5-a980-4c29-bdf7-84e0002dec05/the_greatest_salesman_in_the_world_og_mandino_audiobook_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f404d095-22ef-4254-907c-cd4774b0fbe2/musaxususalejozejajer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e621081-d92a-4e27-a02c-6edc0221655d/baldurs_gate_2_single_character_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21451dd8-0702-428f-ab8a-c54988a91bad/how_to_rig_a_fishing_pole_for_lake_trout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c5f1f6f-a9f4-4510-937e-336cf6fb3eb0/royal_mail_international_parcel_tracker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9574813-3df1-4a4b-ab7f-02143ba6080d/jiwupokafinudevat.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_off0000ff59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF59 5172 bytes
SHA-256: b5daadbeefb7d3ad575a1e787ddef9d21bb0f08b0bc9538b96e672c00fbc30bb
font_01_sfnt_off000110e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110E9 11416 bytes
SHA-256: 7af38b214f85f5ac2243eefabc35a100aed50edf958bc06f142a684bd34eab95

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