Malicious PDF — malware analysis report

Static analysis result for SHA-256 478304b24c5cf67b…

MALICIOUS

PDF

74.0 KB Created: 2021-04-04 08:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3e83fa6b38b7c2e47bed57b8bc10175c SHA-1: d015bb03591c77e4099865a9fa224ceb928df36d SHA-256: 478304b24c5cf67b1f310a4973f6dd786b2a0a2c74905d0e2fe0eb5bbccacf4c
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to suspicious domains, with one specifically matching the 'how to crochet a blanket' theme found in the document body. ClamAV and ML classifiers have identified this PDF as malicious, likely a phishing or trojan delivery mechanism. The presence of external URIs suggests an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=how+to+crochet+a+blanket+with+thin+yarn PDF link annotation
    • http://nipokaxa.getenjoyment.net/acog_prenatal_screening_guidelines.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/bilingual_children_s_books.pdfIn PDF document text
    • http://dirozigumifew.scienceontheweb.net/breast_cancer_self_exam.pdfIn PDF document text
    • http://lofajemami.sportsontheweb.net/gijaveramex.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/28503752712.pdfIn PDF document text
    • http://wofurasosezisax.mywebcommunity.org/15261177521.pdfIn PDF document text
    • http://bionatur.space/what_are_the_3_personal_entrepreneurial_competenciesq1tox.pdfIn PDF document text
    • http://bathforlegs.xyz/hello_neighbour_act_3_green_key_room4jx9r.pdfIn PDF document text
    • http://wevesapawuzu.22web.org/electrical_engineering_syllabus.pdfIn PDF document text
    • http://vebifitapex.mypressonline.com/33112607157.pdfIn PDF document text
    • http://pojibuvuj.mygamesonline.org/complication_bronchiolite.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/xufoseja.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/posefamuzaboni.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/wixanarer/pifugazup.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/best_international_law_schools_in_germany.pdfIn PDF document text
    • http://moganip.epizy.com/fupupaf.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/6x9_speaker_template_kicker.pdfIn PDF document text
    • http://lujolugajejizog.epizy.com/house_ownership_certificate_telangana.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/scout_log_book_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/thermalito_afterbay_fishing_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/how_do_you_program_a_clicker_garage_door_opener.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_off0000e577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE577 5068 bytes
SHA-256: efd240b7e0f39322e98970fcd71c8ade1c6e486365cf9c8058c5ba58151d5ba3
font_01_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 10392 bytes
SHA-256: a406aeb638f533aa8364fae847ae91b18fb637ccc1fbcb78d29c7ef4a4b4d1d0

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