Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed6d2e743bdf4fe…

MALICIOUS

PDF

97.0 KB Created: 2021-02-28 16:14:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c19234078f9885fae70df6347a3c7914 SHA-1: 39fd639655d0e421c5ca0d91ff473c707ed04f29 SHA-256: fed6d2e743bdf4fea07211dad0d49ec9373fb529d41bc0bf4e3f312b72b7a857
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or phishing pages. The document body, though heavily obfuscated, contains text fragments that may be part of a lure. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=would+you+rather+questions+hard+gross PDF link annotation
    • http://mnatural.space/washtenaw_community_college_academic_calendartt8nd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472488/normal_5fe63d3f310de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_6004d1b757454.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473030/normal_5ff176d5b2887.pdfIn PDF document text
    • http://0fruits.space/mobalusapurow74y1r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413469/normal_5ff66891beb00.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/bededuxotulapil/68946801800.pdfIn PDF document text
    • http://zunuwovadete.epizy.com/4th_grade_grammar_curriculum_free.pdfIn PDF document text
    • http://vikogen.epizy.com/toyota_avensis_2002_service_manual.pdfIn PDF document text
    • http://jaguradimesarut.epizy.com/hp_laserjet_p1102w_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/kulemapovogabobuto.pdfIn PDF document text
    • http://vowonedof.epizy.com/livro_asana_pranayama_mudra_bandha_em_portugus.pdfIn PDF document text
    • http://bividit.rf.gd/lezegerelapir.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/subafibigamelixisuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/36708300517.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/space_word_search_puzzle_answers.pdfIn PDF document text
    • http://favisosemetidid.rf.gd/wacom_cintiq_pro_16_manual.pdfIn PDF document text
    • http://vabanenutulaki.rf.gd/71447557655.pdfIn PDF document text
    • http://zonigeki.rf.gd/relaros.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_off00013f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F0B 5328 bytes
SHA-256: f749c52d4fe6a3e4f7398c8834db62867ca7a939f499c7402154857335472189
font_01_sfnt_off0001512a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1512A 10892 bytes
SHA-256: a28d4da0144891ba419923744058d2823505de94b854a00ff45401bccac4a553

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