Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f250bdbeba9d7ea…

MALICIOUS

PDF

71.5 KB Created: 2020-11-18 12:36:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e6cb78046c4c582b12d1e7e075722248 SHA-1: 177256dd2615bb477054b9bf23395cd3be1778dc SHA-256: 7f250bdbeba9d7ea8905ca17071418f6ecd85a93aaad782d0d8485dd9b6057f5
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://trafftec.ru/strik?utm_term=plop+the+growables', which is likely used to deliver a malicious payload or conduct phishing. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=plop+the+growables PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5f8a435758c62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f90bbc2b7c5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373755/normal_5f88f9fe06967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415309/normal_5f9b130dbab46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417527/normal_5f95ed2101b23.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://uploads.strikinglycdn.com/files/bc388891-b50f-4c5f-bfd3-6ec755ff80ba/renudilevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a9ded6d-65aa-4e62-a1ec-46a5c03784b0/busofevezuwejusaf.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/tilizidujodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7abb19e9-5e1d-42fd-b0ee-f59fc3ba87ab/xafefabevomowe.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/dimensional_analysis_worksheet_1.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70da068-24df-4a03-9a3c-13f7905c8105/le_tout_nouveau_testament_telecharge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61f00705-ece5-410c-ab3c-17c976e9c1a8/98960035294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba9729c9-2a47-44f6-baf5-6ea5634a28d3/hess_law.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC647 4948 bytes
SHA-256: 1d6ae29f178ff8238549e4d602acfb4f2fb72285879219ea9688f9fef7abf3e2
font_01_sfnt_off0000d732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD732 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000dfc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC0 10280 bytes
SHA-256: d8692d06b33135cd0690596cedbf55e94bce1c208d5855751a818fc3e32f63eb
font_03_sfnt_off0001030e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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