Malicious PDF — malware analysis report

Static analysis result for SHA-256 7541e3350be9da67…

MALICIOUS

PDF

76.3 KB Created: 2021-03-04 21:45:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 07ec45202e94dda2344c7f314a85547f SHA-1: 4d759440ddf10b02afbd484133a22d58c9cadaaf SHA-256: 7541e3350be9da675ac3764403f5399605b9998f61f382ea1f9882f3e24522a0
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely used to deliver a payload or conduct phishing. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often abused for malicious purposes. No scripts were extracted, but the presence of external URIs and the high confidence malicious verdict indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=new+mary+poppins+chimney+sweep+name PDF link annotation
    • http://bbcua.site/hat_tricks_bardufhn.pdfIn PDF document text
    • http://prizyivnik.ru/is_death_note_pg_13rn4t1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485711/normal_5fcd2f0d26016.pdfIn PDF document text
    • http://eu-study.ru/hermosas_criaturas_pelicula_online_castellano_gratisnkn7x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381105/normal_5fe4050ba3a27.pdfIn PDF document text
    • http://se-mrush.com/munamovelus482p.pdfIn PDF document text
    • http://1fps.ru/kajirewabemububuwasobakuknzjy.pdfIn PDF document text
    • http://latencfsrt.space/rumegujijagigaxezerurim34at.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_6004eeece4be0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pazoluno.epizy.com/jisimoxapig.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/letter_closing_crossword_answer.pdfIn PDF document text
    • http://zobemodorujo.rf.gd/nukukuguki.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/10056560701.pdfIn PDF document text
    • http://rigozapovi.epizy.com/backstab_apk_game.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/transformers_sentinel_prime_titans_return.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/thermador_range_error_code_43.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/moradezupanabivuto.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/luxolog.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/hotstar_app_install_for_pc.pdfIn PDF document text
    • http://xajamojepoz.rf.gd/32016454956.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_off0000ef73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF73 5304 bytes
SHA-256: 8bc04cd4e0bd6f13896db869bb8d2ef9272bd9190384cc9b07ce2074fa70cf1f
font_01_sfnt_off0001016a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016A 10148 bytes
SHA-256: be5528e3877cb201fea3e32bd8be9e0d8efb80a791c0e38fdc005159ee514ac2

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