Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3b19948dc0d3dd…

MALICIOUS

PDF

83.1 KB Created: 2021-03-23 17:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a2d18e48d7c2cce98c8707f1b5c75f39 SHA-1: fa9f7ab109a40a74930580f32f39bb77478a9b1a SHA-256: ec3b19948dc0d3ddd0c32f919b5d862778e5c8b4dce8ccba949a39a63980e3db
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, with one pointing to 'https://gimoguvi.ru/strik?utm_term=kanger+evod+pro+v2+starter+kit', suggesting a phishing or malicious redirection attempt. The presence of a PDF link farm heuristic indicates a potential SEO abuse or content distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/strik?utm_term=kanger+evod+pro+v2+starter+kit PDF link annotation
    • http://criticcxck.space/sofavonojufuswnnaq.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/hoover_spinscrub_pressure_pro_max_extract_60_parts044az.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/mayo_clinic_guide_to_a_healthy_pregnancy_2nd_edition_fully_revised_and_updated.pdfIn PDF document text
    • http://imedo.ru/fourier_sine_transform_heat_equationaz6qh.pdfIn PDF document text
    • http://familyit.pro/harry_potter_5_full_movie_in_teluguxx2j4.pdfIn PDF document text
    • http://expressvpn.store/anatomy_and_physiology_lab_exam_1_practice_test06j1y.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/new_opportunities_beginner_teacher_s_book.pdfIn PDF document text
    • http://katermore.ru/advantages_and_disadvantages_of_centralized_purchasinggo97w.pdfIn PDF document text
    • http://midesamipazizuj.scienceontheweb.net/52284695980.pdfIn PDF document text
    • http://best-ital.fun/roniwulofuxojawowipojop2c7oc.pdfIn PDF document text
    • http://euroshopmn.space/what_non_foods_products_contain_gluteny5so8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zasepo/69888158272.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/61689125499.pdfIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_3f248cef8e7f43c6ac5c4b72c5809a35.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/appium_1._7_for_mac.pdfIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_a5ae026c6cdb47a883cda145087eade0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/dejurowifuzisevetulekig.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/94172904027.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/71971697355.pdfIn PDF document text
    • https://0115c081-d8bc-4983-a705-81db93bf1442.filesusr.com/ugd/990402_2fe0856927d94b6fa4112db9b4edda42.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/90996666117.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/corporate_event_email_invitation_template.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18C 5320 bytes
SHA-256: b0f627a3b0bae1aaa44d6493ee5ae9b1ff80f82afeaddd66a5212abe304e106e
font_01_sfnt_off000103c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C3 10928 bytes
SHA-256: 26b24bc0e09c821d6391540db05a279f813bcfa369ddd792be3737cbd570d8b6
font_02_sfnt_off0001293b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1293B 16296 bytes
SHA-256: 11ec05ed920b2d0fa5529e5771320d52f1a49fcd86446ba712997f8e074d6bd4

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