Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1a76a658f53b0c…

MALICIOUS

PDF

73.3 KB Created: 2021-04-14 10:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 531385d079074791f47f80905e323877 SHA-1: edee601f6063ba52a1cca4cd4d2c0774ff79dc96 SHA-256: 0e1a76a658f53b0cb8882704854be50f4fcf1bcf31545f0b752453a6b4d6148e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one pointing to a domain associated with link farming and disposable hosting, suggesting a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure itself is used to host and present these malicious links.

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 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://lozipotod.ru/strik?utm_term=the+journal+entry+to+record+a+sale+on+account+in+a+service+company+is PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449992/normal_606e3a70e93cb.pdfIn PDF document text
    • http://physcoo.com/skull_wallpaper_for_android_mobilevbecs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496592/normal_602a0c68ce090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404310/normal_60118a2063c5d.pdfIn PDF document text
    • http://doucheapp.xyz/the_lion_the_witch_and_the_wardrobe_quotes_about_aslanwyam3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427820/normal_6032a95478303.pdfIn PDF document text
    • http://tasunixupowife.66ghz.com/meretufilev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449604/normal_5ff589985fb3c.pdfIn PDF document text
    • http://probmaka.tech/ark_solo_engram_guidebpab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377925/normal_600a45ac79faa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavotipuwevir.epizy.com/54207334960.pdfIn PDF document text
    • http://sulipirakiran.rf.gd/mawaboxaxoritagewabiponev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def81cac-bd3e-4aea-bf85-8d5d4ba2c2af/example_of_sensory_details_in_writing.pdfIn PDF document text
    • http://joriboka.epizy.com/password_file_for_brute_force_attack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b890fec0-02f7-4c20-8bff-a510de8f083f/52357414950.pdfIn PDF document text
    • http://dudeferurap.epizy.com/giordano_s_catering_menu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1df6c2db-fc71-4934-9c7d-c119e02b7d5f/71124073971.pdfIn PDF document text
    • http://punuxizo.epizy.com/lewis_dot_structures_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ba5b92-1514-4c5b-b7df-e7f6a694eaaf/how_do_i_get_splat_hair_color_off_my_skin.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_off0000dfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 5500 bytes
SHA-256: 61cc5168bc53293050c92af476023252b6c1f6dfa1b8a6ae6b4fd4b6d5a0acd7
font_01_sfnt_off0000f240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF240 10904 bytes
SHA-256: 100686a946e099df8c3bf5c35bb8efb1e13aeab7ea6dc73849162806416e4196

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