Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf4c47887a71608…

MALICIOUS

PDF

83.1 KB Created: 2021-03-29 10:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: d2e6e7ca1f10ffc7651450226a7171a5 SHA-1: e864367ff2e2b027504091ebefc96af30329937a SHA-256: ecf4c47887a71608e1c20eb6dc813c232d998bc6b405134254b60c2e016fe8e4
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, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a malicious document designed to trick users into visiting a compromised website.

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://bologen.ru/award?keyword=back+to+the+front+metallica+pdf PDF link annotation
    • https://foguvebosep.weebly.com/uploads/1/3/5/3/135315209/8395383.pdfIn PDF document text
    • http://shoop-fl.ru/new_york_metro_north_mape64vo.pdfIn PDF document text
    • http://in-step.shop/moral_philosophy_questions_and_answersejynx.pdfIn PDF document text
    • http://wgathering.org/test_1_reading_passage_3_telepathy2lt75.pdfIn PDF document text
    • https://pufizemopuvagup.weebly.com/uploads/1/3/1/4/131407511/a0cc934.pdfIn PDF document text
    • http://wirelessinfo.ru/basic_python_exercises_google8tbge.pdfIn PDF document text
    • https://dutagoloz.weebly.com/uploads/1/3/0/8/130814416/janexi.pdfIn PDF document text
    • http://beliyden.xyz/maze_runner_4_full_movie_download_in_hindi_filmywapuatn1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vixoxuzet.epizy.com/dobedaboludozewemujig.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/what_are_some_good_table_topics.pdfIn PDF document text
    • http://bupujipa.epizy.com/basilisk_knight_osrs_slayer_guide.pdfIn PDF document text
    • http://pewaxoxepizus.rf.gd/xozixujebipisowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/915135fb-20a7-4201-8977-0dae3392cfe3/jadojazewepelawozigajek.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/brockhampton_saturation_ii_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/msi_z87_g45_gaming_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77456653-66c2-4cc8-bc8a-b0c2c032546c/how_much_is_it_to_become_a_vet_assistant.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/33007592072.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zupofitufavipivalotafe.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/mythic_odysseys_of_theros_gods.pdfIn PDF document text
    • http://zizajurowetomej.epizy.com/cambio_climatico_monografia.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_off00010808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10808 5332 bytes
SHA-256: 08429b4a7252ebd4529c39b706532ac5c14e188936c6c68bea42e61ae2380fca
font_01_sfnt_off00011a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A06 10832 bytes
SHA-256: 7a14f631647ec2006277e7d6be7757e8b062fb7774a0fa4f20eec962f94004ac

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