Malicious PDF — malware analysis report

Static analysis result for SHA-256 298926c5a8d55427…

MALICIOUS

PDF

66.2 KB Created: 2021-02-15 07:38:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1174546c13c018b647b9b4937aae71f7 SHA-1: 26d7018a8dd83209d3778899cd7c71b8befe27a0 SHA-256: 298926c5a8d554277cc2a594ab613842484e4f6936f5d317466247e3f3054e13
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://jottigo.ru/aws?utm_term=mathematica+variational+methods+package PDF link annotation
    • http://reform-st.ru/selena_gomez_wolves_mp3_downloadmsc71.pdfIn PDF document text
    • http://ampinternational.org/book_of_mormon_musical_script9mexb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_600c06a25aac5.pdfIn PDF document text
    • http://pr-bux.online/8245256445lmxps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_6016733f07ba2.pdfIn PDF document text
    • http://sarhello.online/suvozizitodijb0j.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/chrysler_crossfire_srt6_performanceqafcq.pdfIn PDF document text
    • http://shop-onlain.fun/report_compilationrmdue.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/8888042.pdfIn PDF document text
    • http://meblik.su/sedomosapex210a.pdfIn PDF document text
    • http://everydayy.fun/gupixivojosekewm4emj.pdfIn PDF document text
    • https://fukidupedogof.weebly.com/uploads/1/3/2/8/132814182/kaxogoj_wukanuga.pdfIn PDF document text
    • http://freshka.fun/alliance_laundry_systems_programming_manualgix8p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24D 5616 bytes
SHA-256: 41b7ba5b97c81097e500f6d19b88fa40cf641c70a1e8c0218d5968d87e8c0afa
font_01_sfnt_off0000d552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD552 11288 bytes
SHA-256: e74f90c46add97ecdfb63da532da451fbe4111f8300179abc319b1ca6b5e6f4d

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