Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ecfe9ceabf76e44…

MALICIOUS

PDF

68.1 KB Created: 2020-12-21 02:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 054fc05794964a76fc929a894de24c37 SHA-1: d771c257663d8744729d84d007482d52193836af SHA-256: 2ecfe9ceabf76e44f83622906d00e3c74465a83623d44c74e0aa508d81d950b9
162 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/aws?utm_term=adobe+premiere+cs6+presets+free'. The document body, though heavily obfuscated, suggests a lure related to 'Adobe premiere cs6 presets free'. This indicates a phishing attempt to trick users into visiting a malicious site, likely to download malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=adobe+premiere+cs6+presets+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4452395/normal_5fafb11f05bd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_5fa2532d5d639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_5f8e08f581d01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370263/normal_5fc5e795ed9ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480162/normal_5fdfdca0293b9.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/nademopor/application_form_for_food_stamps_in_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/gejuwamivumos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ce1c1c-323c-4833-84e2-76a86c79cdbc/26903781504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/170f7d21-bbbe-4303-b12f-58af5ae631ce/elac_spring_2020_final_exam_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/75884379454.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/xarapokope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62fc472d-fe0e-48d2-ab65-3a8944dd3aad/piagetian_tasks_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb043b1b-480f-4b96-b13d-3a5e0a3f47a4/65066092905.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/745209419.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_off0000cd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD75 5340 bytes
SHA-256: bfacc5f177964b4b559fe564a00b1756cba7b5a4175641098287ae5a695cfe97
font_01_sfnt_off0000df8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8E 10496 bytes
SHA-256: 1a4a65b463101f2d0e4a996f891afca0673d60792c3a8f1359d04c45d89b0a8e

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