Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c227279ab893b9…

MALICIOUS

PDF

79.2 KB Created: 2021-03-25 11:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7a8493c91a4d3b0918b3800f08a0935a SHA-1: 2e28531eaefffa102b0fb42e34f99b6eed8e34ef SHA-256: 87c227279ab893b92e2ef72fd7a327d587c487e08f0d71e57bb9f4b6af56d641
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 0.9996

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://leonvi.ru/strik?utm_term=what+causes+a+faucet+to+leak+at+the+base PDF link annotation
    • http://razvivatel.blog/who_invented_telephone_and_what_yearj8uby.pdfIn PDF document text
    • http://begetus11ppz.xyz/libro_los_cinco_lenguajes_del_amor_gary_chapmanm2ddy.pdfIn PDF document text
    • http://sogikujuwawim.22web.org/wikiloxagatavomil.pdfIn PDF document text
    • http://gagapazu.scienceontheweb.net/lojixuwonevitalutozunos.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/home_remedies_to_help_get_rid_of_a_boil.pdfIn PDF document text
    • http://topstudy.fun/chemdraw_ultra_free_crack2gn5g.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/history_of_banking_industry_in_nigeria.pdfIn PDF document text
    • http://sibuvre.com/char-broil_patio_caddie_gas_grill_for_saleady8l.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/vifatufusepafite.pdfIn PDF document text
    • http://tapavinologo.mygamesonline.org/83002956436.pdfIn PDF document text
    • http://idealicait.website/pukowadelipedukobimoteuvh56.pdfIn PDF document text
    • http://dabosesavedevet.medianewsonline.com/98655270723.pdfIn PDF document text
    • http://niwadeg.mywebcommunity.org/22734128129.pdfIn PDF document text
    • http://jeseselanus.scienceontheweb.net/napuwerabofexakexuz.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/nitizobuv/vegetasi_yang_menyusun_formasi_barringtonia_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/91030128936.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/bolowajiradam.pdfIn PDF document text
    • http://mogewatiside.epizy.com/teduraxolujudatoz.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/32768653640.pdfIn PDF document text
    • http://kikanelomer.onlinewebshop.net/san_diego_covid_news_update_today.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/makevubaduvufuxegiweka.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/luwamejijeribezu.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_off0000f71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71E 5092 bytes
SHA-256: c67a166656895c42a16f8c63fc86e43d4d06739c96732306d33b5a707e4ad4c7
font_01_sfnt_off00010882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10882 10824 bytes
SHA-256: c9613d1441d105cf6308d4e86e66e244a910aeaa4d53ee63388981f412a4a442

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