Malicious PDF — malware analysis report

Static analysis result for SHA-256 baca65842f47ee78…

MALICIOUS

PDF

75.3 KB Created: 2021-04-08 08:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b50ef50e1940f24c617d39917fb1cee0 SHA-1: 9504e3230c4856df43cf6b591c873dd7592651c4 SHA-256: baca65842f47ee7865065b260588bc4124d7876a7fd024e4ab1b343c510ef946
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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/wix?keyword=cellular+transport+test+review+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/vitimosugu/J5hdgeh/destiny_s_child_cater_2_u_album.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425727/normal_6024882db351f.pdfIn PDF document text
    • https://cdn.sqhk.co/sesudegaruta/SgdfKUy/screen_recorder_app_with_audio_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/xekobigi/5hd6Uii/template_jersey_futsal_cdr.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/Ea9jcKI/6352381172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496812/normal_605301f279807.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/espejos_eduardo_galeano_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/TidcijQ/labelling_the_heart_worksheet_ks2.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/MGCidid/lodesevez.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/6dcc1d1e-d3b0-4092-a05d-b933dca5173f/53374129316.pdfIn PDF document text
    • https://5ac9d038-517d-4536-97f6-676423289421.filesusr.com/ugd/b444d4_cebd008496044f2889206ea9ad5d5739.pdf?index=trueIn PDF document text
    • https://4b4b92a8-4ac5-4030-97d5-af0917f8c077.filesusr.com/ugd/0251f0_0c209b0e267e4d2883613ff3bfba5f7f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aa3724b-ea14-4ede-94e8-936e4615df7e/what_do_canon_lawyers_do.pdfIn PDF document text
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_66175a7317e4464a95243ca4a91b3ed3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7dca24-a9d4-4f58-9bac-8b993ce2ed59/real_world_linear_equations_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c328dc5d-bbbf-4944-9cf2-3f6a2160e039/88245280503.pdfIn PDF document text
    • http://bagugexasorip.myartsonline.com/1996091898.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/plano_budapest_turistico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a294a8e-7ae8-4e43-b353-78115e4de21b/burger_king_allergenen.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_off0000eb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB16 5028 bytes
SHA-256: 2f9bbc503e218c62a2b3dcc328021150e0ae4afbf1692528f0706de23f659f94
font_01_sfnt_off0000fc3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3B 10388 bytes
SHA-256: 3fa12f420dbee2d10d327d31f218065bbcc2598848df31cd1e29821ddd82169c

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