Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9045d6531f559b…

MALICIOUS

PDF

73.8 KB Created: 2021-04-09 02:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c382e1b7ff778aa9d9fdbdb15a85fedf SHA-1: 045be5d10c078a8df2a7b2744380828d766ccbe5 SHA-256: 0f9045d6531f559b8bed77e4c2f01c195a458c75c96c1a61632609042d0ac4de
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious content, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious URL identified is https://mezovuduw.ru/strik, which is presented under the guise of offering free movie streaming.

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://mezovuduw.ru/strik?utm_term=twilight+saga+new+moon+free+watch+online PDF link annotation
    • http://bezerojiw.scienceontheweb.net/36080837267.pdfIn PDF document text
    • http://retoxen.mypressonline.com/msc_bellissima_deck_plan.pdfIn PDF document text
    • http://manovina.mypressonline.com/diraxaresawukiga.pdfIn PDF document text
    • http://peguxukeziku.sportsontheweb.net/curso_biomagnetismo_gratis.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/79465824926.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_72b30c748972457d842bfe0d7614c7a9.pdf?index=trueIn PDF document text
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_9f120fd1b7774a5bb4bc6fd59d252f62.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bidivo/verbs_in_present_tense_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/48321787837.pdfIn PDF document text
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_7fe499f6857a4789b671477b35414e0e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/01e8ce2d-be4e-4bb7-a91d-7de1f16eee68/jotufafo.pdfIn PDF document text
    • https://13006a6e-9b3f-4191-9e3f-064114488741.filesusr.com/ugd/34464a_d837901f9ddf4e368fa2c556409d2cd8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/first_arabesque_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf9e698b-825e-423d-99b2-21b129d0f66d/ethics_theory_and_contemporary_issues_9th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c7fd3d-6d2c-4bfb-8b48-0b9680f9c375/tezedo.pdfIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_012122771891418a8c78125adc55de9b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/joterige/97272809834.pdfIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_e1072975cfec4e61a7bed1ab810ea9bb.pdf?index=trueIn PDF document text
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_08ceba9638f44db0a16d8153f622c027.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_b62df60ea63f42ba9dbce79bc95cef42.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE207 5336 bytes
SHA-256: 668d22b819182c4363fe78ddd0982e9c3fff99c52694b750ff5e06830ab831df
font_01_sfnt_off0000f418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF418 11076 bytes
SHA-256: 33bf23e06b42f823fa211f0b671e7e1860dc8749cec18da94b09961311e57b8b

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