Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de7009017508227…

MALICIOUS

PDF

75.8 KB Created: 2021-03-22 21:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 261626ee50ed92b4cda9000c1f9cd5f8 SHA-1: bcd1d40f9119f6cb20abb6f0c5300113137b819d SHA-256: 4de70090175082271d6afa132083f6af8b0299f1817249838e084d0224ca1e8b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, appears to be a lure related to hair dye removal, directing users to a malicious URL. The presence of external URIs and link farm characteristics suggests an attempt to redirect users to potentially harmful content or phishing sites.

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://mezovuduw.ru/strik?utm_term=how+to+get+purple+splat+hair+dye+out PDF link annotation
    • http://xedijama.getenjoyment.net/4896232687.pdfIn PDF document text
    • http://gusitolife.iblogger.org/vert_shock_program_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460042/normal_60212785251b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376101/normal_6004e8ea1e7cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_60270fc65cc81.pdfIn PDF document text
    • http://judijemavup.22web.org/writing_a_book_report_3rd_grade.pdfIn PDF document text
    • http://gimazazutakegi.iblogger.org/91881466238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_6058db5597973.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lexekuduwowig.atwebpages.com/lixexumotipej.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/vuguzinarozaf.pdfIn PDF document text
    • http://wotolag.epizy.com/40502201676.pdfIn PDF document text
    • http://wilazetifoka.epizy.com/97756637193.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/surface_area_pyramids_and_cones_worksheet_answers.pdfIn PDF document text
    • http://xuwuxubemepimox.rf.gd/fezumamimopo.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/87367009161.pdfIn PDF document text
    • http://kobinegugagikag.epizy.com/ffxiv_mining_leveling_guide_1-_50.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_off0000e7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 5376 bytes
SHA-256: af4001fc044122daae9460f30d02b29944279314c96120f46da9159da99c2d04
font_01_sfnt_off0000fa05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA05 11416 bytes
SHA-256: e3ed48bf0685ea3272eb91541acce1becbc13671179954be89b7b5b388c78394

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