Malicious PDF — malware analysis report

Static analysis result for SHA-256 3209325021ee04a3…

MALICIOUS

PDF

98.4 KB Created: 2021-03-29 02:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 274544ee48176af9dbf9945ff5ade52d SHA-1: 53bc2d78f0559c24fd4527a1e80ae74f66eebe88 SHA-256: 3209325021ee04a3843423db0fbfe1b29d6718b8175c2988d25282837c47e0df
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://soxebez.ru/award?keyword=arendt+banality+of+evil+pdf PDF link annotation
    • http://com-connexion.xyz/69691956168s0a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467322/normal_6032a285c7aa6.pdfIn PDF document text
    • http://googsnat.space/36254246970ayxrt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fe5ee831d75d.pdfIn PDF document text
    • http://hookup682.site/judumopafamadiwird66q.pdfIn PDF document text
    • http://iminn.ru/72346929348bjtc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5fed66e42573f.pdfIn PDF document text
    • http://sumusevazig.22web.org/7362359233.pdfIn PDF document text
    • http://ru-dev.xyz/o_que_so_os_coliformes_termotolerantes26i64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_5fd18df91058d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_603586172893f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497110/normal_60044e92b6fc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455657/normal_5fe735b094cd5.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/vukujidor/86632661810.pdfIn PDF document text
    • http://misosemarimo.rf.gd/wofuvoradufiwusegogazobek.pdfIn PDF document text
    • http://zopusawonomiwi.rf.gd/laboratoire_biform_sante.pdfIn PDF document text
    • http://pamikope.epizy.com/ttd_calendar_2018_free.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/zorexatikaxoni.pdfIn PDF document text
    • http://rajafidaforuzav.epizy.com/christmas_carols_songs.pdfIn PDF document text
    • http://zagutimidaf.epizy.com/vijizej.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000143fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143FD 5148 bytes
SHA-256: 51cf7ca2e59b42f093d97711bd4e423dae80568511bd1cb1315aa98ba634d3bc
font_01_sfnt_off000155a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155A0 12184 bytes
SHA-256: e94a973616aa5acd7c44f8dab74dc3fb87ec522290032508b5d60fc4a99662aa

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