Malicious PDF — malware analysis report

Static analysis result for SHA-256 6413cb78ab0b88d8…

MALICIOUS

PDF

69.2 KB Created: 2021-02-20 11:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 95e0b4834aee986d2c569bf39b637ecd SHA-1: 5cdb85049b4f43fa147060a0feaf67c3b3b5ac23 SHA-256: 6413cb78ab0b88d8268f0623c16612cca5db9d1c5eeba37d50958d4f0ea41688
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=how+to+find+hexagonal+prism+surface+area PDF link annotation
    • https://cdn.sqhk.co/sojowidaz/gcjgiej/61960235399.pdfIn PDF document text
    • https://cdn.sqhk.co/rirakibugo/fn3id9S/score_hero_fase_339.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403539/normal_5ffb918d9d307.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/mokebubukowanovivenulavot6sieh.pdfIn PDF document text
    • http://zdorovienashevse.xyz/cute_bear_backgroundswx21c.pdfIn PDF document text
    • http://sport-stavki.fun/juwaravaseboy7k4w.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/jISIOih/history_and_origin_of_art.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/tzZginl/dobawasizuzuwafagebometug.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupesiparu/heB8BjI/nba_2k20_mobile_app_release_date.pdfIn PDF document text
    • http://lunotikipadul.66ghz.com/33268771764.pdfIn PDF document text
    • http://otomail.business/how_to_be_a_real_estate_agent_in_victoria833l6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468286/normal_6018dc333e544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_602f7452d58fe.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/batiku/jafupudiridoper.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/analytical_reasoning_skills.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/71649796738.pdfIn PDF document text
    • http://nofadokar.rf.gd/kivenivenafupemirenaju.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/major_muscles_of_the_human_body_worksheet.pdfIn PDF document text
    • http://vutagefen.epizy.com/gupidovaduda.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6D 5688 bytes
SHA-256: a2b12c23f5ab388886d003dd4aa91f618e2e5011be19e77d5d9c6b7eefee66be
font_01_sfnt_off0000dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 11492 bytes
SHA-256: 6cd3d0bf66497da9209e4fad9646d7126c52f265ae7d7f02ec6d2ca332cf7d95

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