Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c765de2094f9b71…

MALICIOUS

PDF

80.6 KB Created: 2021-03-25 09:15:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8a9f6dc84b78cbacb300c72f0d19eb05 SHA-1: aec999f8cbdebdfc0bd223aa799547ec6d208b6d SHA-256: 9c765de2094f9b7130444b5a5879185fbd85d181e610859251f668dbcc546a90
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URIs, many pointing to disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/award?keyword=bozanstvena+komedija+dante+pdf PDF link annotation
    • http://kakaxazirobolob.iblogger.org/changing_my_name_after_marriage_checklist.pdfIn PDF document text
    • https://kobuzonoge.weebly.com/uploads/1/3/1/4/131452837/fakokadenagamawazom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468831/normal_60480824bc92f.pdfIn PDF document text
    • https://xogiwudib.weebly.com/uploads/1/3/4/7/134715522/tawodojepawub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384323/normal_5fe9e668c2cb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386354/normal_60246b80bb763.pdfIn PDF document text
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/fesedotuturok_gexanak.pdfIn PDF document text
    • http://qupieasy.online/holt_call_to_freedom_online_textbookmaktn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485454/normal_6052c4dca9a5b.pdfIn PDF document text
    • http://fenellalucynelle.info/lafagabilimelaguzexidajugrs3e0.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
    • http://gilemexuwef.epizy.com/jokevolivuxepavenud.pdfIn PDF document text
    • https://2ae8fa2d-8b21-4cd7-bd94-b44763fb9b4d.filesusr.com/ugd/8e1ec7_c8c5b0c0329d4e6bac61bf3d9f904eef.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9bea25e-f035-4598-8f15-2c10ff3293aa/kowururevutopal.pdfIn PDF document text
    • http://bananamiw.rf.gd/lusepunikoxinun.pdfIn PDF document text
    • https://92fed17e-af34-466b-b3fe-38cd9ef27699.filesusr.com/ugd/192d58_2a9111dbab7d41178b3fa2245263ab2a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c33a4ebb-25a0-450b-a403-3ce4241cf795/vemararorolusuf.pdfIn PDF document text
    • http://velupar.epizy.com/84930180290.pdfIn PDF document text
    • https://f395d2f2-f939-483b-815f-81062d4747ff.filesusr.com/ugd/be2697_07a6d8633baa4ecbad8a877f913d4e7e.pdf?index=trueIn PDF document text
    • https://e8ceee85-86bf-4804-80ab-d7a1511cbcf5.filesusr.com/ugd/38650a_959b9a5ac5bd4f65a041c06a8fe4e78b.pdf?index=trueIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_d89a537865234aa2a0cb1696c3f02139.pdf?index=trueIn 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_off0000ed7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7B 5148 bytes
SHA-256: 349d42b3f6c940f4d6a9627b70632044b5218a31f92b41b15a0efc1f782de8dd
font_01_sfnt_off0000ff00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 12128 bytes
SHA-256: 1ee37cff73f685e5c61c39f0da4f9ec6bf70b775ce45aa0e573e772606fb6153
font_02_sfnt_off00012563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12563 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.