Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9db0a00fa72a650…

MALICIOUS

PDF

76.3 KB Created: 2020-12-20 19:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 70212f520b33ea912cba8dfd5b2d1b99 SHA-1: 130d9cc6a0f42bc0451a6c1c372ab07587fb4368 SHA-256: e9db0a00fa72a650e3e12330900a43ebc60ad11c5e3c6d1caf674b39eb2bc582
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that impersonates a healthcare provider. This suggests a phishing attempt to trick the user into visiting a malicious site. No scripts were extracted, but the presence of a malicious URL and the ML classifier's high confidence indicate a phishing attack.

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://gettraff.ru/wb?keyword=carbon%20health%20telehealth%20medical%20clinics%20california In 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/5784633f-1889-4eb5-a87a-c079d55ec658/hayalet_src_2_trke_dublaj_indir.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff689955c744b536924c/t/5fc402cd9ee0f32b87d059ee/1606681298348/fupan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95ba647-bf51-4cb6-925d-5b5b52656f21/veretaxuloxajosira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e69a29-8f2c-4ee6-8944-89fa82db1d2e/senior_project_ideas_science.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbc7f9c-6632-479e-8e3c-6a09ef22f91c/wagisexafovarap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ff51ee-c703-4fe5-b734-3ac12088090b/14211260319.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3c655d26ff1194f85c811/t/5fc4ae3c145a8629dc44e1fb/1606725181817/cracking_the_code_of_life_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae7de74b-5f09-46a6-8f89-cce8fab1e8db/sedunukujozepugunofibum.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/pigijazekevike.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf532061e25426e12f6559/1606374176737/wamopokixek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a145b7-6d80-495b-9d98-ac19dd250143/80270335684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41bbb397-7edb-4188-a0f0-4f189cc5ecb9/ingenieria_de_la_reaccion_quimica_le.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_off0000deb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 5212 bytes
SHA-256: 29cea6e52f8050c4680f134d3b3a58b0fb900548516def8906bfb70d7c5ade21
font_01_sfnt_off0000f041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF041 10964 bytes
SHA-256: 5457d63e0e91542827eb12d7ac456cf367dce83f26a12ad589538a2bd450f623
font_02_sfnt_off0001159d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1159D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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