Malicious PDF — malware analysis report

Static analysis result for SHA-256 3301bbf9cfa1ee2d…

MALICIOUS

PDF

73.0 KB Created: 2020-12-25 22:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 400a4bcf672cd073a267ba61da1e58ea SHA-1: 16b9ccc89f0f74f3a70c78f5319233dea05b353d SHA-256: 3301bbf9cfa1ee2d120aebb7ca01d4d5ffa1f41199028819d76e65c02dd40890
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for an embedded URI pointing to a suspicious domain, which is also listed among the extracted URLs. The ML classifier and ClamAV detection strongly indicate maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=pac+man+ghostly+adventures+wii+u PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476002/normal_5fc47766140a3.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/dhdjhjj/father_and_son_pizza_chicago_il.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5fbc723ab6c1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_5fbc8caf86b64.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/zvAhfhf/19357784555.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/tizowodifi/balance_general_en_forma_de_cuenta.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/lazafuvutiguvavura.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/do_yowhatsapp_atualizado_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f43a3f42-f96e-4b79-b68e-f6b5be166410/55462395407.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/scriptures_on_restoration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a02a66c-9bdb-4c43-bab5-25861af8a1bd/legunivalilipaxunapakix.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_off0000d031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD031 5488 bytes
SHA-256: 75729524513e94f63af25ab84d7f05d27094a8cbc8b24644a3e7d5b5a5cc1809
font_01_sfnt_off0000e2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B8 12304 bytes
SHA-256: cb58f62ee24854268df09b729ad42f91b1e683170766ae5780f39f63e5cf8975
font_02_sfnt_off0001094e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f