Malicious PDF — malware analysis report

Static analysis result for SHA-256 82042374f47a369a…

MALICIOUS

PDF

79.5 KB Created: 2021-03-18 02:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c184b08cf42a768e6cf99c4d900cbbfa SHA-1: b5ec55c918c27e441693fc70abcab5f99e46c929 SHA-256: 82042374f47a369afc26e761c87115c389f1146ff68a99afaee0d03ca064e7cc
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on low-reputation hosting. While no scripts were explicitly extracted, the PDF structure and URL patterns strongly suggest malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/123?utm_term=top+android+mobile+games+2018 PDF link annotation
    • http://fetesitomer.mygamesonline.org/xajatavozuzeber.pdfIn PDF document text
    • http://metikinave.22web.org/30294697041.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/jopasirokotoge.pdfIn PDF document text
    • http://raponikidosal.getenjoyment.net/jizopawenonukedoweros.pdfIn PDF document text
    • http://jenewazajasazu.getenjoyment.net/medida_cautelar_definicion.pdfIn PDF document text
    • http://pexarinolal.mypressonline.com/59554743515.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/puxokufizepemewibaxi.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/how_much_does_it_cost_to_become_an_emt_in_texas.pdfIn PDF document text
    • http://mepanawabopod.22web.org/ethnographic_interview_guide.pdfIn PDF document text
    • http://sewamagiz.66ghz.com/38359972249.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/can_i_put_vicks_in_my_diffuser.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/standard_of_excellence_enhanced_book_1_flute.pdfIn PDF document text
    • http://lununobasafino.rf.gd/sad_girl_love_shayari_image.pdfIn PDF document text
    • http://zevizajezu.epizy.com/golarivararulokomokemegon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b676dc-6bc7-450d-a7fa-a0d0fe280fac/youtube_chopin_prelude_op_28_no_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/042d30c3-e1f9-4a94-9032-699604f70c2d/tititeronedutewikopep.pdfIn PDF document text
    • http://fafinonez.rf.gd/machine_risk_assessment_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84f1296e-b8ec-4343-91f0-518d08078484/larawusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38bb6fa7-331c-40ef-b781-32339a927229/the_talented_tenth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226c349e-6376-4737-ab71-a7e840ad7286/33592676976.pdfIn PDF document text
    • https://7e6b698e-d56f-4a21-8c48-787e2f6d39f4.filesusr.com/ugd/7836c9_15ad1a250a824c14a70709eaaf8edf67.pdf?index=trueIn PDF document text
    • https://5e446c31-fcb6-4427-a178-91ee45bbff8b.filesusr.com/ugd/4e76b8_7423761555f743b39bf5d9e67f6ee24e.pdf?index=trueIn PDF document text
    • https://da99f664-88c7-4a27-98aa-0bbcec2e8f57.filesusr.com/ugd/66f3f9_8dcc1e9430c74108b7c894a56f384744.pdf?index=trueIn PDF document text
    • http://ramenejepom.rf.gd/nbi_application_form_free_download.pdfIn PDF document text
    • http://xuvunemomot.epizy.com/adobe_photoshop_elements_11_free.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_off0000f79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79C 5888 bytes
SHA-256: b076cf2f1258640fbb7445e05933f5058499940ba53a63a02ed788da44192688
font_01_sfnt_off00010b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B88 10776 bytes
SHA-256: bb2fd63aab696ae9557e9f26e22172435b2c08fba43c9d3efef41123db2c2195

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