Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb99608a8007284…

MALICIOUS

PDF

65.5 KB Created: 2020-12-23 07:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6ab216025da06cda65ef0af188f68725 SHA-1: 19d089f862bd5eb9ec608cdc6c3ce0fd95ab1498 SHA-256: 0eb99608a8007284dedd48947744b9758c25b34ed4fdbd7ed68383fb922b75c1
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 'traffking.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a harmful site, likely for phishing or to download further malware.

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://traffking.ru/strik?utm_term=chocolate+wedding+cake+ideas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f9e7bf989bc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391907/normal_5fcedda9a5124.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/xisakazelelinim/mass_percent_practice_problems_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1f6020-d885-4bfe-bc64-44f94fe61819/diagnostico_de_gestacion_en_cerdas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe27c5815195806649758c3/t/5fe2b304d3e70406f3e32552/1608692487066/kezejidesude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44d2fa02-7e42-44e0-897d-fff1da9fe453/riraxejabad.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/angularjs_form_data_json.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde8bd64ad8390d8b778f30/t/5fdfbcf0fb7de13a64779657/1608498418421/19166639476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15046854-8d5c-4ab2-ab33-6ae8e2ccfc3d/patches_pee_movie_list.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/jugawirozemurisa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe26e48d8494d53ba49fc91/t/5fe2acfdb47c395086f65212/1608690942743/50981459882.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_off0000c514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC514 5168 bytes
SHA-256: 8c089aa64cbf0612cb05ac0340c9a9c6c9d254c1dfea443711d9f2ec87403a3b
font_01_sfnt_off0000d6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B9 10124 bytes
SHA-256: f0b82eba1046981d91c408ab1fa4797be969de3e2316332fad9e549ad6997bed

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