Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e224cb535e42a42…

MALICIOUS

PDF

71.0 KB Created: 2021-03-21 10:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 963a4af458d0c00be3171a0f0b6ccc85 SHA-1: 96ad04ed1836931bb7b45bb8308ae6854674143a SHA-256: 4e224cb535e42a42b6f749d72e66af0fe823ea94b908bb5e92e504a5a4817c5f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=lifetime+health+textbook+answers PDF link annotation
    • http://wtia.space/seesaw_family_app_qr_code_won_t_scan1472t.pdfIn PDF document text
    • http://ptmonline.ru/806832516075b9no.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/zerumubejoku.pdfIn PDF document text
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/rorubaforiduni_kufatakaw_dowowevipepow.pdfIn PDF document text
    • https://kagarowili.weebly.com/uploads/1/3/1/0/131070488/9109187.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/go_math_grade_5_book_online.pdfIn PDF document text
    • http://naturfresh.fun/depatogenanekedotcl8sf.pdfIn PDF document text
    • http://mizafaroremida.getenjoyment.net/jokazitiloganesa.pdfIn PDF document text
    • http://50offstore.pro/mui_argeta_gi_bao_nhiufbtfp.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/essentials_of_statistics_for_the_behavioral_sciences_10th_edition_answer_key.pdfIn PDF document text
    • https://waxizeno.weebly.com/uploads/1/3/0/8/130814339/garuselesup.pdfIn PDF document text
    • http://leririv.sportsontheweb.net/ataxia_cerebelar.pdfIn PDF document text
    • https://wavujosivisero.weebly.com/uploads/1/3/2/7/132740585/vegivesezojanuzom.pdfIn PDF document text
    • http://igcopyrightforhelps.com/504835081228ttza.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/tumuzu/algebra_lineal_grossman_8_edicion.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/xeraxelixowatobar.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/do_all_keurigs_have_filters.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/18608616378.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/proxy_firewall_windows_10.pdfIn PDF document text
    • http://gepivefukusi.atwebpages.com/approach_to_chest_pain.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_off0000d9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F8 5312 bytes
SHA-256: a03ac93fd5b71ccaa83fac1d5ba27c68e185b92b3cc973bcf74a76f957aa0c4e
font_01_sfnt_off0000ebf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF6 10088 bytes
SHA-256: 213992fe3e1fecefba639dcb44e4352e3b2e1c5bf6a75853641ab944197d7c0d

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