Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3da49c8967526e…

MALICIOUS

PDF

60.1 KB Created: 2020-11-24 18:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 70b8dc0f7371fcac97e95784130e57f4 SHA-1: 1a6dd490640a30b616e4e8d1d792d26544c23107 SHA-256: df3da49c8967526e91d16a180769a77b9145ca76b806398ce6d605097a56291c
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 0.9995

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://trafffi.ru/strik?utm_term=pro+care+cool+mist+humidifier+manual+pccm-840 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367923/normal_5f8af320623cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_5f9e2969cd47f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468531/normal_5fb8714458b9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389809/normal_5f9043842f15d.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/vopadofugon/characiformes_caracteristicas_principales.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/wojabewamagogigi.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/lutesewosetelevadal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62bbbe8b-b7cb-41a3-81fe-ab2549f2182a/lemerufexaxuzupuguranero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78bd583b-769f-4878-bd51-df0d05dd8094/joint_information_system.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/geometry_extra_practice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a069808d-bdb7-4a48-94a0-7ab0dab4e0e8/35253339376.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/bahubali_movie_songs_free.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_off0000ad2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2D 5852 bytes
SHA-256: 93f813e8f2a2250b1a6520d64b0aa6e6e0fe1fa5c688682572a27b3d1102bb98
font_01_sfnt_off0000c0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F3 9952 bytes
SHA-256: 5027e9ed27520d2e1923dbc35799e3d29b08b0d8e2059418aa1111a898fca737