Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0ef05f7648fb42…

MALICIOUS

PDF

62.5 KB Created: 2020-11-24 00:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0711fa179bf8ddc5c9818092d5f2dad5 SHA-1: 2d15afdee9b8ea180a42b7fe6a37599b9eddd184 SHA-256: 8c0ef05f7648fb42c1e0af085808c22b9b82a7449f69a019197a956f04b50741
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary URL, https://gettraff.ru/strik?utm_term=lista+de+empaque+formato, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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
  • 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.
  • 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://gettraff.ru/strik?utm_term=lista+de+empaque+formato In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449781/normal_5f9ea1f1ba4b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/15fb45c4-e341-4912-9a77-2111d0db9d7f/blank_physical_map_of_asia.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/tenimopowubibexob.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/dragon_mania_legends_mod_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/unit_1_parts_of_speech_lesson_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6816cd52-1c20-4516-810a-28740a7dbe73/13415075438.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/oracion_a_la_bandera_salvadorea_para_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d8c7b56-64c2-423f-b955-6d01182ee236/70562620222.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/abc_bmj_books.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_off0000baf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF1 5224 bytes
SHA-256: 885190b12b3d5e5576201f15413bbe29be800623758cb0b590e9fdfed21d90d9
font_01_sfnt_off0000cc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC9E 9932 bytes
SHA-256: 69c10ae41e4fc9120749f17a00d8342547fd5ed359a905a8ea26c4ec996150de