Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f956dc359fa370…

MALICIOUS

PDF

59.8 KB Created: 2020-12-19 15:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ff3b84031b64b620405a0d1a890cea7a SHA-1: b51eba1fe600365c71d9831b92222648e030fa08 SHA-256: 04f956dc359fa3706eb52feb34f513d170fcdcebf491bec551fc0de9b6f03183
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-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://traffnew.ru/strik?utm_term=layers+of+the+earth+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456989/normal_5fa11fdea53fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_5fbce57d74f8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459939/normal_5fa322fa14d72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451742/normal_5fcb1ff4658b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5fd63a7b5890a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405946/normal_5f9ddae3e5528.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/zukogi/tugeluninun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd30dec23b2b0938fc17d9/1606234336325/ripleys_believe_it_or_not_wisconsin_dells.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/whatsapp_for_windows_7_desktop.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/22314257751.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/xobuwepivizevepaku.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/kapoxamixug.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/saint_vincent_de_paul_auburn_wa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30220ec917750a3e588e7/t/5fce3ed97ae85b53b2be75f7/1607352026094/mcdonalds_coupons_canada_november_2019.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_off0000afd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD2 5024 bytes
SHA-256: 089530f94e5aeb9fc474c9d839eec034655d220879f6b950f478da88ded120ab
font_01_sfnt_off0000c100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC100 9860 bytes
SHA-256: 2fc6d0e564abb202c6de1a2752ab191c7b4f42b70e0edb92d0d02c37ed8c3824