Malicious PDF — malware analysis report

Static analysis result for SHA-256 e365e4d5a5de1159…

MALICIOUS

PDF

79.2 KB Created: 2021-04-08 03:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8594c1b155cf35c539008d76b592c7d3 SHA-1: 97e37dc91e64e0adbf750d7ec4250635f95f0643 SHA-256: e365e4d5a5de1159ff3f5ae556d784fe336294c3d542cef18a0c83c16b9983cd
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Dna fingerprint analysis gizmo answer key' and embeds multiple external URLs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=dna+fingerprint+analysis+gizmo+answer+key
    • http://mojenisijita.mywebcommunity.org/how_to_write_a_good_introduction_for_an_essay.pdf
    • https://wapaberupuz.weebly.com/uploads/1/3/5/3/135397773/7186236.pdf
    • http://amorexpo.com/word_families_kindergarten_worksheetsdvht5.pdf
    • https://cdn-cms.f-static.net/uploads/4418987/normal_603cfad54c45d.pdf
    • http://zaparipajomigi.scienceontheweb.net/kekiloribidozobugovadap.pdf
    • https://jadimakadafi.weebly.com/uploads/1/3/4/3/134378671/392682.pdf
    • https://static.s123-cdn-static.com/uploads/4497078/normal_6007412d916f9.pdf
    • http://fazejajogavu.medianewsonline.com/famesexavenasefusi.pdf
    • http://reggis.info/biochemistry_textbook_lehningerb4pge.pdf
    • http://zoompol.xyz/data_table_html_templateaurtx.pdf
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/tobonutapav-gerajezu-rewusorobu-xudinefowezo.pdf
    • http://marafonsport.site/data_mining_paper4niz3.pdf
    • http://sevelorovuwo.66ghz.com/pdf_split_and_merge_basic_2._2._2_download.pdf
    • https://cdn-cms.f-static.net/uploads/4391605/normal_600f236253f67.pdf
    • http://namafafiteg.mypressonline.com/ufone_internet_packages_2020.pdf
    • http://sabovibin.medianewsonline.com/morodizev.pdf
    • http://zagodutaf.getenjoyment.net/importancia_de_los_tratados_internacionales_en_mexico.pdf
    • http://presentinsta.online/shop_lease_agreement_format_in_telugurynk9.pdf
    • https://didizotaxudip.weebly.com/uploads/1/3/4/6/134619455/6178993.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zaninenuj.rf.gd/sibitasenolurega.pdf
    • http://riledabetime.myartsonline.com/sympathetic_and_parasympathetic_nervous_system.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f772.bin
3304356b08b99517a8794098d8a7d6b3b2bf9dfd1c10c241d6b016e96448b41c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF772 5528 bytes
font_01_sfnt_off00010a64.bin
5fb7fb028d96da68c5493c19d5cd7babea0faa0f9ff49ebe40763d3efd24235a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A64 10872 bytes