Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ace440e139ebc0…

MALICIOUS

PDF

76.7 KB Created: 2021-05-09 11:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: dbc955766d83a987663416da69a6c8c4 SHA-1: f1743b2a9958231e39860db6c45b214597c528a1 SHA-256: 48ace440e139ebc06bcc3dbc11e5292803c655432cc534ff346be8bc08142748
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with a primary focus on directing users to 'xezojetit.ru' and 'useplafond.xyz', suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'old italian love song chords', likely serving as a lure.

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 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://xezojetit.ru/strik?utm_term=old+italian+love+song+chords PDF link annotation
    • http://useplafond.xyz/2723093057chhwl.pdfIn PDF document text
    • http://anarchymedya.com/716474549777qtcj.pdfIn PDF document text
    • http://streamsweets.com/human_anatomy_and_physiology_lab_onlinef0o5n.pdfIn PDF document text
    • http://idealslim-ordina.site/evil_dead_part_2_full_movieaub2j.pdfIn PDF document text
    • http://rodisawikikofu.medianewsonline.com/56035913957.pdfIn PDF document text
    • http://usacreditmonitoring.info/4298511751lcoeu.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/15254623016.pdfIn PDF document text
    • http://nesobaka3.xyz/gijinupia7rv6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_51cf1ba848a7473cbdf5a41ef15ec9d3.pdf?index=trueIn PDF document text
    • http://vakifavu.onlinewebshop.net/jemokexakilaxiki.pdfIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_c20e4705e2504dafa2fc64e7c646a0d2.pdf?index=trueIn PDF document text
    • https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_134f249711d34d45ace7fbb7eaf9ef4b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f345eacd-6868-49e1-ba29-0c28f4fd996d/siwazen.pdfIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_94469005afbf40bdac2834070f7abba6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f720ddb-08c7-464c-865a-e6a6008e99da/84426438353.pdfIn PDF document text
    • http://niselekotoz.myartsonline.com/business_model_innovation_opportunities_and_barriers.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/graphing_parabolas_worksheet_algebra_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23c12ef-b0b1-4c5f-8ed4-0f06218d6efe/what_is_beyond_dragon_ball_super_manga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ccaef0-8d08-46af-89ac-294aa90b9188/how_do_you_change_a_gas_valve_on_a_dryer.pdfIn PDF document text
    • https://a161ff94-1a6f-4367-b6f8-8e513a5e676d.filesusr.com/ugd/4c7633_1758af0d153a4081b39cc62561eea7f2.pdf?index=trueIn PDF document text
    • http://riveminigokoxa.myartsonline.com/gozefelip.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_off0000eddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDC 5288 bytes
SHA-256: ab35ad29203ea6e3bf3dcba1e00e542391fadbd2402e90a7f43efdfccdbe0ebf
font_01_sfnt_off0000ffd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD2 11252 bytes
SHA-256: 38473639022d36fcb6ef540439fbd7242eba01892a9933cfaf005dd38a3c9bd4

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