Malicious PDF — malware analysis report

Static analysis result for SHA-256 594986c2f41b15ec…

MALICIOUS

PDF

75.8 KB Created: 2021-03-22 12:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0a4d35d3ea2535b7d556cc372efe4dc3 SHA-1: b27f3109698894efc969ec2429318adf69dcdb55 SHA-256: 594986c2f41b15ece8be2490e623c4581d8fd78b6e0c6ac370748211d2748583
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, contains text related to 'Berklee performance center events today', suggesting a phishing or social engineering lure. The presence of an external URI indicates an attempt to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://xezojetit.ru/123?utm_term=berklee+performance+center+events+today PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451348/normal_6048dc8f9bf6c.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/CjffxyZ/amazon_go_grocery_store_chicago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457838/normal_6034f81077380.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/voxexotikajanujutazad.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/life_fitness_95ti_parts_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/ifjai3m/vekapize.pdfIn PDF document text
    • https://cdn.sqhk.co/xewasejeve/OnFdhbf/jetevagomojavegitifo.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/ncert_biology_book_for_class_12_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_605140ccadb98.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/why_wont_my_versa_lite_pair_with_my_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/wogebebaruro/y1ijRji/dj_lucky_mixing_song_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381546/normal_5fffebcebf619.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/6685654343.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/bgejdXV/runner_turbo_125_motorcycle_price_in_bangladesh.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/xukirizugukugi/ics_100_course_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/urdu_taqreer_books_free.pdfIn PDF document text
    • https://a24bc4ef-4ee2-4fae-af0c-c9fea810b245.filesusr.com/ugd/67d96c_e7e06692b5ae4ea6af5ffd48c9cf16bd.pdf?index=trueIn PDF document text
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_43fb4033b7a44bb78b30d364e8114c7a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wofaxil/very_faint_line_blue_dye_pregnancy_test.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/diccionario_strong_espanol_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/dijanotidute.pdfIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_2d1020779e214964900dac251efeed0e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/nedewegaruwuzu.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/sedifujovotexu.pdfIn PDF document text
    • http://zivexotafoni.myartsonline.com/catecismo_na_igreja_catolica.pdfIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_5aa3144ff8624a93aff9347450c56565.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_3c11b62b866743239b7cfc3653cd33bb.pdf?index=trueIn 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_off0000e95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 5576 bytes
SHA-256: 219c3b1c21ccdcd55909d2d7756e53da7b3e7834fd3759f8664088217c230c55
font_01_sfnt_off0000fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4D 11096 bytes
SHA-256: 02d97c6fffdae05d74651f5d446102fe913da38393f5204e66ade062c0fde14a