Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c399afbe3c572d7…

MALICIOUS

PDF

69.0 KB Created: 2021-02-27 02:06:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5c01253b4b74b90a5abb04c6f412aecf SHA-1: 1929101ce4fd5964149ef25a7b6403f6aca5c17a SHA-256: 8c399afbe3c572d7890c5f9de2061196b50f84855f7657a90f5391131690d915
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-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://ponafet.ru/wix?keyword=the+crucible+literature+guide+answer+key PDF link annotation
    • http://finansi-7.online/228734649902zx3u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481154/normal_6006bab527208.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443356/normal_6007b706c6b27.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/41852126979.pdfIn PDF document text
    • http://janorewaxeno.mygamesonline.org/libro_metodologa_dela_investigacin_cientfica_dr._julio_piura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446400/normal_6002972752ae2.pdfIn PDF document text
    • http://br1.red/blattformen_bume_bestimmenmn9pg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_601a38f82465a.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/how_many_died_during_the_spanish_influenza_of_1918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_5fe70769466f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462093/normal_5ff6c8e629f79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460263/normal_60035253bc2be.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/gazijewevan/bitdefender_total_security_2019_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/quote_comparison_template_excel.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_off0000d0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BE 5548 bytes
SHA-256: 8c57a47f5339c67f51dbf6c26bd2b2e2ca64f6928ae772acd217ab3db129c95c
font_01_sfnt_off0000e3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A7 10616 bytes
SHA-256: fc1ead65a2a3f5c084812731df8a09e114f1fc02470def545d2829edf1d69e61