Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edda87f2dcb97f5…

MALICIOUS

PDF

88.2 KB Created: 2021-03-15 04:37:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b7448d7bf0714a50ad82ff10b90f51c3 SHA-1: 0de3e9c55a68a7728a833c91025ea6f3ebfbfccf SHA-256: 0edda87f2dcb97f51f0de3e91026dd9ef80f9e6c5ba6028212ab5af51595832e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to educational content, consistent with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/wix?keyword=easy+antiderivative+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485001/normal_5fce5fa3c37f9.pdfIn PDF document text
    • https://cdn.sqhk.co/virixerusupa/jSJehws/anonymer_browser_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fdee524a761a.pdfIn PDF document text
    • http://jetotujaj.iblogger.org/electrical_engineering_jobs_in_indiana.pdfIn PDF document text
    • https://bowasizavaxilek.weebly.com/uploads/1/3/4/0/134042597/kazutod.pdfIn PDF document text
    • https://werobipopopavuv.weebly.com/uploads/1/3/1/1/131163729/muworeg-wovunerefinafi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5ff6d3d517329.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/WeIihio/81941696412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_603d21e75c908.pdfIn PDF document text
    • https://mafakovik.weebly.com/uploads/1/3/5/3/135347242/b09b640ced5c6.pdfIn PDF document text
    • https://degexaxi.weebly.com/uploads/1/3/1/4/131406510/zolewexuneta.pdfIn PDF document text
    • https://deriwofapavuz.weebly.com/uploads/1/3/4/3/134311795/ninelolufixevan_wazupen_bowugowaze_nibulo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusupap.rf.gd/what_is_relativity_of_simultaneity_time_dilation.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/plastic_corrugated_sheets_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/transformation_of_rice_mediated_by_agrobacterium_tumefaciens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e427c506-4e39-48f3-ba67-c9e8d0967884/fundamentals_of_nuclear_science_and_engineering_solutions.pdfIn PDF document text
    • http://kefixofelapadi.epizy.com/business_communication_ppt_presentation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/akb48_senbatsu_sousenkyo_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/15366405482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492c47a7-047a-4b75-b745-ee19a08f886d/que_significa_ser_un_lider_proactivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76333e4-e664-48e4-9a98-53181a9655ba/41575888639.pdfIn PDF document text
    • http://vijodugopokufe.epizy.com/best_cheese_to_pair_with_rioja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f250412-e255-4fa9-ab5d-1132c0b1be49/building_structure_illustrated_dk_ching.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91aff213-c07c-4b30-bce4-e33c2ba7094f/will_succession_act.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/17398664157.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_off00011e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E78 5156 bytes
SHA-256: 879eacae254fcc1c7ab42a69155ae4db8a2a82e6067cb0ed8933575d62dd06bc
font_01_sfnt_off00013017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13017 10412 bytes
SHA-256: 22f83319bb05edf91e1e54665633937a493a2d84423de9468310d003a2e79c33

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