Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a852b62a8ab504…

MALICIOUS

PDF

90.6 KB Created: 2021-03-18 13:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3781dc59fc6d307b3e77de7dbedf5204 SHA-1: eca429cce21ea71d64d775d8cc0b6730b212b277 SHA-256: 71a852b62a8ab504f6c94b8329dbea229a493c8d1c710583f4753ab40d6f3ff8
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics, including a critical ClamAV detection and an ML classifier. The embedded URL points to a suspicious domain, likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=how+to+look+expensive+andrea+pomerantz+lustig+pdf
    • http://xoroketogejuxe.mywebcommunity.org/78678679148.pdf
    • http://pawezujexas.mywebcommunity.org/kurapuri.pdf
    • http://vuzetasavuxoso.mygamesonline.org/91594362951.pdf
    • https://cdn.sqhk.co/jaxabofapuw/fhhifH0/loweliguditutonij.pdf
    • http://kikababono.mywebcommunity.org/14331517654.pdf
    • https://cdn.sqhk.co/fudikuzi/cjeHLie/34810753536.pdf
    • http://mekomob.getenjoyment.net/the_smart_classroom_management_plan_for_elementary_teachers_review.pdf
    • http://zivemigidefis.mypressonline.com/tutejidugetiweso.pdf
    • https://cdn.sqhk.co/dutumutu/HbmYgjE/addition_polymerisation_worksheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xezonijida/94044330013.pdf
    • http://manosotidokef.myartsonline.com/turtle_rock_links_awakening_wiki.pdf
    • https://s3.amazonaws.com/foneniz/lamusomukumup.pdf
    • https://s3.amazonaws.com/tolivajupeku/15954553666.pdf
    • https://s3.amazonaws.com/mulerux/xuxezitemobadujak.pdf
    • https://uploads.strikinglycdn.com/files/0b5fdaa7-b9cb-4c9b-b55f-d7b797199323/el_nombre_de_jesus_hay_poder_acordes.pdf
    • https://uploads.strikinglycdn.com/files/6276fa8b-8d22-472e-9b81-8dc3d81b1cfd/solar_eclipse_2019_ppt.pdf
    • https://uploads.strikinglycdn.com/files/6a1b9366-d33c-4d4d-9adf-2a93b331f52c/jack_lalanne_power_juicer_express_price.pdf
    • https://uploads.strikinglycdn.com/files/46eec8ac-6a02-40e0-b9db-d20e30dd4b1c/collins_english_grammar_and_composition_class_2_free_download.pdf
    • https://s3.amazonaws.com/wudibirewuduto/tangled_hd_wallpaper_free.pdf
    • https://uploads.strikinglycdn.com/files/cfb4d731-43ec-47f6-8e13-bbd53466b071/zinuxegepufelowulosimurom.pdf
    • https://s3.amazonaws.com/voxipanovigepiv/60592650861.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001218f.bin
d07dce586fb39ec703717b6a317245a55964b0649868887409ac4c7b39e7f4bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1218F 5656 bytes
font_01_sfnt_off000134dc.bin
45e301fe175067978f35b6b908455d02af5346cb80c7f45e6dc0a4e90a960b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134DC 11932 bytes

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