Malicious PDF — malware analysis report

Static analysis result for SHA-256 632d2c0f0eca9b34…

MALICIOUS

PDF

75.4 KB Created: 2021-05-23 14:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7894c9cd9a16639c5510ea6ca4bec0c6 SHA-1: 907bb923536c5b816bcfc569192c32fabf58576a SHA-256: 632d2c0f0eca9b34c9459c479402a94727eab2def403f87330adb289e0c1d09a
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=annamayya+telugu+movie+ringtones+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392191/normal_605d6b7eda948.pdfIn PDF document text
    • https://pexafibilo.weebly.com/uploads/1/3/4/4/134484824/1656572d58d.pdfIn PDF document text
    • https://dogopakuva.weebly.com/uploads/1/3/4/6/134698139/9167283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465147/normal_601da760d3a54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416786/normal_5fcae52cf2aa0.pdfIn PDF document text
    • https://xesukalo.weebly.com/uploads/1/3/5/3/135311970/xizumeluzofet_gexozufave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_604ba5d676c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465707/normal_60600778e3802.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/8a80e868-b357-40e2-a273-44f46e697809/80963752339.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/what_is_att_remote_support.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62710389-243e-45e0-81b8-17ec6ff31cdf/the_society_of_the_spectacle_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d3803f-1f9b-47d9-89b7-1239fa01d97f/pewalokozukabamedo.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/definition_of_motivation_by_different_scholars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d32563-5e14-4631-a5da-0696c7132816/5649135600.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/vabikalazirugaxajem.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/oxford_discover_6_teacher_s_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/abcd_2_movie_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/zulubivowes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a861ac05-2faa-4f44-9b49-623bc197923d/heathers_the_musical_high_school_edition_script.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/nelsons_ministers_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45b39b9e-e949-4b06-95f1-5408ab37d2e0/tableau_prep_learning_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1bb7b9e-e83a-47d2-8c78-336fc4aacd27/desuwab.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_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 5468 bytes
SHA-256: 4fa9f3df6422558a92e4b8c2bf958fea5a7e84ebd9642994515b87f619870483
font_01_sfnt_off0000fb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB61 10732 bytes
SHA-256: 31e289c297a25fead99c5c499bf81741f5dfe9bb98d9ed2adfc7a2689300afb2

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