Malicious PDF — malware analysis report

Static analysis result for SHA-256 74274b600a91d134…

MALICIOUS

PDF

82.1 KB Created: 2021-03-16 00:18:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b54c3dd8a88eb8ed9720d40d238acd01 SHA-1: d8b7f7fe7d330c19b5c9e397f4e4d814ab8e958c SHA-256: 74274b600a91d134e61fa52dd4c6d686ad6a760a474ebf146139f11db6c9ebfa
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://seumenha.ru/strik?utm_term=kemper+profiler+rack+-+rackmount+profiling+amp+head PDF link annotation
    • http://lijonotogi.scienceontheweb.net/who_is_stephen_kings_favorite_author.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/9232832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_604c96de58744.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/musavan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425227/normal_5fcb5778c5997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447640/normal_601bd02dbd9ea.pdfIn PDF document text
    • http://nuxuzuruguli.mypressonline.com/the_crow_movie_brandon_lee_quotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_5fea339b8b6cb.pdfIn PDF document text
    • https://kodavagimiwebod.weebly.com/uploads/1/3/5/3/135346487/vagekaderot_zaduzajudedasa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_60017d3093288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374369/normal_5fe9ee5997d97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zulezov/bopevejajozolemura.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/vuxofakoxoletififatuxazat.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/banefejodudigodilelup.pdfIn PDF document text
    • http://fasadokejofis.epizy.com/55207820061.pdfIn PDF document text
    • http://xadebomuf.rf.gd/doxawadofolifonozida.pdfIn PDF document text
    • http://zizidamikedug.epizy.com/67751563455.pdfIn PDF document text
    • http://purevaxa.epizy.com/99800837116.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EC 5336 bytes
SHA-256: f24ec2244ec0daabe7692d60e900049156c54b1cdb9e037cb72d82de8ca8638e
font_01_sfnt_off000105e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E4 11324 bytes
SHA-256: 979534690074a6609d6957e4e4c5c1d43c73a66b36594688d85598ab953e699f
font_02_sfnt_off00012c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C73 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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