Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f1072da7808c88…

MALICIOUS

PDF

74.1 KB Created: 2020-11-18 17:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6bf7d4a142a1ec4cd879b23f331b8cd5 SHA-1: 113ea402eb4f7f12ab920a480bafe3e48012b227 SHA-256: 95f1072da7808c883e4c71d38b8139a081b7b190eb323b7d9a1fb9fc82fb0423
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by a machine learning classifier and ClamAV. It contains a link to a known malicious redirector infrastructure, specifically 'https://traffine.ru/strik?utm_term=brother+mfc-j825dw+service+manual', which is presented as a service manual. The PDF structure and embedded content suggest it's designed to trick users into visiting this malicious URL, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffine.ru/strik?utm_term=brother+mfc-j825dw+service+manual In PDF document text
    • https://komanibinepo.weebly.com/uploads/1/3/4/5/134588578/kitebo_getikabu_juxolaxabufof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f935ca71ae67.pdfIn PDF document text
    • https://ranaxeli.weebly.com/uploads/1/3/4/4/134478161/9596813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fb4868ea7eea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f87002145fa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_5f9bf58cc6fe7.pdfIn PDF document text
    • https://dowezepuxaku.weebly.com/uploads/1/3/4/4/134463959/3791474.pdfIn PDF document text
    • https://figotuzu.weebly.com/uploads/1/3/4/5/134579221/jurevop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5fa1010cc2a54.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/6e9384f3-740f-4a63-b718-a3acdd55cdb1/kudojosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c31c5e8-57fd-4d52-b5db-a1967af39d17/doi_mat_khau_ngoc_rong_online_mien_phi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97490d3-cecc-4158-b6b0-658fa678a2b0/mendel_used_pea_plants_to_investigate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3921175b-8697-4592-84d8-1560654de464/39305633398.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/persian_baby_boys_names.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_off0000cfea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEA 5900 bytes
SHA-256: d84a43a727420cddcd310a3991b2a19cf0edffaf049d9833c3807395842e45b9
font_01_sfnt_off0000e407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 13252 bytes
SHA-256: 8626f47f423699422dd2751f85c01769ae2ba4b3f986659bcdca25117ffa9bfc
font_02_sfnt_off00010d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D86 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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