Malicious PDF — malware analysis report

Static analysis result for SHA-256 d397b000a67310e0…

MALICIOUS

PDF

76.4 KB Created: 2021-03-15 17:47:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 60aa87d998d18797989b6e5748ca1496 SHA-1: 55d19780686f8b15cb504571123feeac19bfa9ce SHA-256: d397b000a67310e0250da6bc6418a0515b07c74c9cad67a02a28bd0facb02df7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 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.
  • 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://nipisod.ru/wix?keyword=welcome+holy+spirit+music+sheet+pdf PDF link annotation
    • http://potenciy.xyz/633393005338zp7z.pdfIn PDF document text
    • http://souve.me/netherland_dwarf_colors_guidez54a0.pdfIn PDF document text
    • https://cdn.sqhk.co/soredepel/2jdzgd8/fortigate_ssl_vpn_user_authentication_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jefutubup/QCMggSg/sim_card_reader_for_iphone_11.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/7a8d1a6ce946e.pdfIn PDF document text
    • http://kindraretterath.com/qualitative_data_analysis_methods_for_interviews2pmu8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_604f2c22e1738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417406/normal_5fd2faf1e2fc8.pdfIn PDF document text
    • https://cdn.sqhk.co/mobubivifa/pjbZLwE/cake_design_walmart.pdfIn PDF document text
    • https://fapotuseji.weebly.com/uploads/1/3/4/7/134712372/pekaweniwif.pdfIn PDF document text
    • http://musc-media.xyz/degraded_performance_processortcs3m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5ffd3fe519761.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/guxosa/mary_poppins_songs_lyrics_stay_awake.pdfIn PDF document text
    • http://luxotenudiwuzu.rf.gd/runilizojapidukelekoj.pdfIn PDF document text
    • http://suzutinidoxuvim.rf.gd/income_tax_acknowledgement_form.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/36366769465.pdfIn PDF document text
    • http://gemakeruw.epizy.com/letter_f_colouring_sheet.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_off0000eb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9A 5300 bytes
SHA-256: 5c32b5baa2db756ea7d05301850a467543b6ac3f13656236c75233cdbc34aefc
font_01_sfnt_off0000fd8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8C 10984 bytes
SHA-256: 5271e481ac37d94b652788dbdec8913b922a880a52e417019fd19d152d08aa86

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