PDF malware analysis — malicious · 4203a8563e3c6433

MALICIOUS

PDF

65.5 KB Created: 2020-12-19 23:22:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 183ff626aba3d15de6db127773a6da3d SHA-1: e9d25570318d8b8e99299e22594295c8a29c889d SHA-256: 4203a8563e3c6433d947e1f0f0b90da164f7a66888e0d9268df362ab520944e6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, 'https://ggtraff.ru/aws?utm_term=uric+acid+foods+to+avoid+list+pdf', is flagged as malicious. This suggests the document is designed to lure users to a harmful website, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9911

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://ggtraff.ru/aws?utm_term=uric+acid+foods+to+avoid+list+pdf In PDF document text
- https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/guriru.pdfIn PDF document text
- https://lupenasax.weebly.com/uploads/1/3/4/7/134738003/9215980.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/muvemasoxaji/ray_bradbury_biography_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/402dd116-a328-4eaf-a5ee-d4ffe5442efc/character_traits_worksheet_4th_grade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/75b4c0fa-7923-44fd-9265-0b196c0fb3b9/nehemiah_leadership_principles.pdfIn PDF document text
- https://s3.amazonaws.com/dudigonifu/gazaminukubufusamatip.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc0052111f6a4198480c96b/t/5fc475f2a97599144e879767/1606710773356/pheasant_run_st_charles_events.pdfIn PDF document text
- https://s3.amazonaws.com/xoxaneral/download_aptoide_app_store_for_pc.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c72a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC72A	5200 bytes
SHA-256: `f95d85337654b00c90b19b74547f75b8da42d2aa781b3c180be60d29d2f0ab5e`
`font_01_sfnt_off0000d8f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8F8	9576 bytes
SHA-256: `c1ae7737e1549c6adf82e513cd80d5b9c0bab8b579bb855d776af14a3ab08e43`

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