Malicious PDF — malware analysis report

Static analysis result for SHA-256 1099a69d06551edc…

MALICIOUS

PDF

76.1 KB Created: 2020-11-24 15:59:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7f6ae7962b8b41cc181beab76a20f7d2 SHA-1: 62cf73c85795b903a3bf0451902a6806360fca35 SHA-256: 1099a69d06551edc6f585cb553d3b740be22e0ee443a53ab0669003940706f8f
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://traffine.ru/strik?utm_term=forest+lake+area+middle+school+bell+schedule PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447436/normal_5fa3081f8032a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_5faf7f230f0e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370304/normal_5f97394a00e6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sabegokek/harlem_school_district_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6045e813-effa-40f5-9ae4-f2ddf6639c17/50663126166.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39553505-08c7-4bb6-8b75-ecd82c2e1aa0/2425948058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3a122e-4c12-4f81-8c16-b02f7d8ed2c6/17625063932.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/florida_dmv_pasco_county_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0929aec0-5ba7-4a2f-8a7c-8ced253377d4/83106218160.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/mid_city_campus_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d833985-eef0-4c2b-b687-dbdfd71cf30e/92063349867.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE74 5116 bytes
SHA-256: b1a640f145a2f3d0ad34e67367eb407715d4f73b584147c70d0645f31c8421bb
font_01_sfnt_off0000efd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD9 10984 bytes
SHA-256: 38533cf1d978abb1d0c5bb49d854011c18feba2c11f6301f07ed467f95f41c0a
font_02_sfnt_off00011579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11579 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2