Malicious PDF — malware analysis report

Static analysis result for SHA-256 01793e7299210fa4…

MALICIOUS

PDF

82.9 KB Created: 2021-03-26 12:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1e59df00cbe0db904c8d6c15c7176eb6 SHA-1: 2a59ffa43f7c9c9d64eeb640b906add854d52e9a SHA-256: 01793e7299210fa47d6cac0cca48972ebf7b1fcc43ba7be7350f4a605af47413
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV also flagged this PDF as malicious, with ClamAV specifically identifying it as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the presence of numerous external URIs indicates a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/123?utm_term=android+tv+vs+smart+tv PDF link annotation
    • http://repair-monokoles.ru/83366190939ylxdf.pdfIn PDF document text
    • http://swiss-gear-top.xyz/is_there_a_third_six_of_crows_book2bzzy.pdfIn PDF document text
    • http://mujogatebili.22web.org/6521162303.pdfIn PDF document text
    • https://cdn.sqhk.co/gesaxamadew/Gjbdbji/benji_bananas_adventures_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwozigef/cjhggii/65731007793.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/fZRzjbI/patugilelijonaruzasozafa.pdfIn PDF document text
    • http://cozyplacefor.rest/nujozorezexipedujetxiynz.pdfIn PDF document text
    • http://smotrikino.fun/65656260137wsmq1.pdfIn PDF document text
    • http://jowitut.iblogger.org/the_spectacular_now_full_movie_hd.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
    • https://s3.amazonaws.com/kevava/jebedu.pdfIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_afeedf8fe7964e819e6cfdf3621a9f20.pdf?index=trueIn PDF document text
    • https://8ed6bd9f-de2b-4923-b7df-82f95eb18a03.filesusr.com/ugd/7fa32f_15559a7f3a8541369fbb211c3ef2bcf8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/77327143812.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/41414250065.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/45771216906.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/r_in_action_second_edition.pdfIn PDF document text
    • https://dc6b22d1-fd3c-476a-b8f1-b0505981f591.filesusr.com/ugd/ab5adf_bc02b9905dd344298c72c130197fb6d8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/sample_accomplishment_report_for_teachers_in_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/shareholder_loan_to_company_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/40346847217.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_off0000fb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB63 4656 bytes
SHA-256: b3e7a3a42b968181511705e556affbd77907b5043fce43d6853c4baaa114bb78
font_01_sfnt_off00010b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0A 11300 bytes
SHA-256: 04b7ea1f9c0391f46c619fa9fcc5a0a9d65b486e127cb00435049103dbf4ef31
font_02_sfnt_off0001306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1306C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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