Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f67d05bdb6f9a1c…

MALICIOUS

PDF

70.2 KB Created: 2021-01-13 15:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 755df3e1ffe147312e2beb6f530b3b6f SHA-1: efd4cb9efad9ad5e7538ac41a360dbba74fcaa2f SHA-256: 2f67d05bdb6f9a1c46299e5098a31ee51407b223180e0ee9841040b5ad7860f1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=business+concept+example+pdf PDF link annotation
    • https://nibuxapevu.weebly.com/uploads/1/3/4/6/134601724/fezoneda-vudulam.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/nobotapabilu_xesaluti_zoforinijeve_lututitim.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/Siajfot/domino_club_leeds_drinks_menu.pdfIn PDF document text
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/3353465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5fd8b16d6bae7.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/6edd2e196bb9412.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/hhMhg2o/solar_system_planets_video_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5fa10bb43b195.pdfIn PDF document text
    • https://ranoxezumurew.weebly.com/uploads/1/3/5/3/135345736/zujifixoluto_rujugo.pdfIn PDF document text
    • https://verikadofaja.weebly.com/uploads/1/3/2/3/132303102/4972567.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/kesumasaka/scalability_and_performance_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/bard_guide_3._5.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/48339745233.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/27546292366.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/hach_dr_850_colorimeter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/chula_vista_fire_training.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_off0000d6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F1 5320 bytes
SHA-256: 2dfa448fd070515b53434f368033c60243580916686ca72c9e4b3841fb10344b
font_01_sfnt_off0000e90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90A 10212 bytes
SHA-256: 9b9aea4366045fea62614c2cc2e83d8c9a22db3820ac630bc7614426014f3d38

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