Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a4186ca3cfdc2e…

MALICIOUS

PDF

66.2 KB Created: 2020-11-09 19:10:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7cea8fa4af4978f162d4cb2561f04be8 SHA-1: d9ec473f970f75e0e452630ddd193d3fa33a6c83 SHA-256: 41a4186ca3cfdc2ed85905893d901e0e199f37db0fa0313dadeb81d7d817d3ac
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 0.9998

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://trafficel.ru/aws?keyword=soundbot+sb520+user+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f88d61454b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_5f91550cca655.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/wixikarago/vhlcentral_answers_spanish_1_lesson_4.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/dalefabawakojixib.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/intelligent_business_english_book.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/88717385475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf58090f-cd0a-4a7f-a9d9-3507a0ba724f/35778249638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e3e429-fd5c-4b56-bdde-ebe52824cbb4/jepexabew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1238998b-8cff-4885-b0c8-54728f2c6007/hill_climb_racing_apk_unlimited_money.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f873930-61d6-4966-bc80-3bed9fd2fb52/vojutimafasob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/585d60fa-bb88-45d0-99f7-1229e4b8f451/osrs_port_piscarilius_favor_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa9a648-056e-43ae-881d-b2183b5107c1/23128787756.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_off0000c67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC67F 5612 bytes
SHA-256: a3b187521a1d536559b003f089d3e18ef903b11b0d7893f9ae668bfc68b6756e
font_01_sfnt_off0000d97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97C 10124 bytes
SHA-256: 848477c3cbe38fa741aa62909c5922221c57c52e614c63b75ccd94b14f43dcf3