Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c14ec83c6150fc4…

MALICIOUS

PDF

70.1 KB Created: 2020-11-26 01:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4f48f52909b0c2a77faa17fa50f0b632 SHA-1: d2df68fbd81c36f7d385fa66b9fccd5e55d4a34b SHA-256: 1c14ec83c6150fc4b15845c15666b75c5d00ff4c71892271774937385600eb8b
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffmen.ru/123?utm_term=mark+1+iron+man+action+figure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415065/normal_5fa07d2907677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f8843d3c8fe8.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/dumizu_sarigi.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/lewuli/army_drivers_training_course.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/mitutoyo_surface_roughness_tester_210_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d57ccc-82aa-422b-9393-5dd3a3c078b1/50869980228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97eb60ec-d59d-464d-a047-7b895773745a/1721494250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2b93f53-f867-4f70-8e1c-21c99d73063b/55748401816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9841bc5-ab85-4a10-954e-6bbd3475fc7c/enterprise_disney_cast_portal_hub_sign_in.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/20516539651.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/english_grammar_practice_set_with_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/19782246828.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_off0000d57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57C 5112 bytes
SHA-256: e3a2f3489e2a6fa683e1a5a61e82aa9ba8a935ac2a5487ebeae57f965e678091
font_01_sfnt_off0000e6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EA 10836 bytes
SHA-256: 8ecc1fcf44e5431f6f047c361d979308734e452b8a9d6f5668b7a758999fa756