Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9ef501008ac066…

MALICIOUS

PDF

79.0 KB Created: 2021-04-16 21:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5836022d9b8065eceb36237e90f24011 SHA-1: 968ed23f18ea3ea29a5b6bdf6793d3bf0b510c70 SHA-256: ed9ef501008ac0664090e72ad2c18640186de35bd51f2769d5bc33577218c0a1
126 Risk Score

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 0.9996

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://dugedepap.ru/strik?utm_term=orion+cooker+turkey+legs PDF link annotation
    • http://reflectionss.space/rebels_city_of_indra_the_story_of_lex_and_liviayfkn8.pdfIn PDF document text
    • http://mrshadow.net/tugopewenepu0h.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/jcjAibe/rijedonisirekadesavomas.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/UzIgfhf/fakivuvusibokalijov.pdfIn PDF document text
    • https://cdn.sqhk.co/tufiroxova/igor0EO/one_touch_drawing_free.pdfIn PDF document text
    • http://funseeds.site/21110892497eruc7.pdfIn PDF document text
    • http://fowujuli.iblogger.org/how_to_teach_basic_writing.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/i4hcaie/bowebaxedulujope.pdfIn PDF document text
    • http://andyhong.blog/1632058402395z9r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zokidogonaz.rf.gd/how_much_does_adt_pulse_cost.pdfIn PDF document text
    • http://pejezal.rf.gd/messenger_lite_updated_free.pdfIn PDF document text
    • http://jukopofavim.epizy.com/dagesafifoman.pdfIn PDF document text
    • http://vabusak.rf.gd/6149401217.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/kenmore_elite_dishwasher_side_mounting_brackets.pdfIn PDF document text
    • http://sajogaluka.rf.gd/59409551885.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/nisijafotefixolotojepa.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/68720536486.pdfIn PDF document text
    • http://gorevifero.epizy.com/kemokujukopi.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/pukupajevutida.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/refifib.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/how_much_weight_can_a_2020_ford_ranger_pull.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/excel_vba_worksheetfunction_datevalue.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_off0000fa8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8A 4948 bytes
SHA-256: 79277f4fd30986953dcfeb89bac701004e029caf02a24e54191971a202677f68
font_01_sfnt_off00010b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B85 10280 bytes
SHA-256: 95579e86176c554e6f709e13a2cb81338687ffd5351e8738232fcef3c6296ea0

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