Malicious PDF — malware analysis report

Static analysis result for SHA-256 65032f9a3c072b67…

MALICIOUS

PDF

73.3 KB Created: 2021-03-29 10:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 783fd71c57da04446b648495c8eb8b03 SHA-1: c29a6cf975dd62bc557447605878929fc10037cc SHA-256: 65032f9a3c072b6798f6241927f5b9de8bddb8418f69a83ae0150ba279616a68
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URL `https://xajibur.ru/strik?utm_term=bell+hooks+feminism+is+for+everybody+sparknotes` is a strong indicator of a phishing attempt or a distribution point for further malicious content. No scripts were extracted, but the PDF structure itself likely facilitates the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://xajibur.ru/strik?utm_term=bell+hooks+feminism+is+for+everybody+sparknotes PDF link annotation
    • https://cdn.sqhk.co/jojikoxazew/gdhjjid/radiant_defense_foundation_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/cjbDEgj/fotejavunomupopiza.pdfIn PDF document text
    • https://cdn.sqhk.co/kasunelebak/Agchwjc/75737798778.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/GXhh7jh/skyrim_se_best_magic_mods_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dokadajij/xHwgjdh/83306992417.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/O2jiXgd/blue_bottle_coffee_nyc_brooklyn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca21ea4-8434-4e39-96de-59582a29f0aa/maxi_cosi_pria_85_max_cleaning_instructions.pdfIn PDF document text
    • http://palivejakuvo.rf.gd/82741648062.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/60138966686.pdfIn PDF document text
    • http://serepuzokoz.epizy.com/mathematical_statistics_with_applications_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e21a7ccc-2776-4d2e-a27c-033422ce8875/how_to_make_a_pop_up_story_book_step_by_step.pdfIn PDF document text
    • http://refokosawo.epizy.com/kularu.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/22749784959.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/lewosominubasevinopisob.pdfIn PDF document text
    • http://jozixal.epizy.com/73723393825.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/are_pink_diamonds_rare.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/fonozexofovezumu.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_off0000e091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE091 5696 bytes
SHA-256: 10fb580da81f620565238ebfc4f6071b46c5b711ebe76441498341560dfd6092
font_01_sfnt_off0000f3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CA 10584 bytes
SHA-256: 6696c4db085d25b5456f159e1534bb96aa325cb7f689e71d3bb8c47708dd13c8

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