Malicious PDF — malware analysis report

Static analysis result for SHA-256 6731e475daccd733…

MALICIOUS

PDF

73.9 KB Created: 2021-02-06 01:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: baa8c34246a9a7f84689227ab8052f68 SHA-1: 3141783b71c4de22cc550bc6f72134523ad6db18 SHA-256: 6731e475daccd733e62e30c60cd4d7611aacf08e2cc6ba4dfbc0c9f98ef4e0f0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=diesel%20jeans%20fitting%20guide In PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hYigjbt/motorcycle_flat_track_racing_near_me.pdfIn PDF document text
    • http://vasamekekegu.iblogger.org/tetojakozuduxubibin.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/cag_full_form_in_medical_term.pdfIn PDF document text
    • http://lulumel.66ghz.com/bumisiberesowokugekew.pdfIn PDF document text
    • http://zofufina.22web.org/love_album_song_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/iYiiidQ/nojetu.pdfIn PDF document text
    • http://lodixewovufosa.iblogger.org/hepatitis_c_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/lejesapazud/5JEQhfO/zaparesafapekoretasutuw.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/hhjjbaT/degavosejize.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/mubemutolewe/zurukujipekopaxujasorex.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/animal_crossing_city_folk_wendell_guide_pictures.pdfIn PDF document text
    • http://sovizaz.epizy.com/transformation_from_caterpillar_to_butterfly_is_called.pdfIn PDF document text
    • http://zalaxorenisev.epizy.com/familias_angiospermas.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/shapes_of_molecules_questions_and_answers.pdfIn PDF document text
    • http://xaramoturowuf.rf.gd/3dmark_2013_free.pdfIn PDF document text
    • http://figaniver.epizy.com/60106637364.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/vadijuzeso.pdfIn PDF document text
    • http://lafeseg.rf.gd/9360953573.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_off0000e4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AB 5052 bytes
SHA-256: 9e5c8a99523ba0e4a5c153bdc06a30d3a1cd37706ee953caf648e77544732e50
font_01_sfnt_off0000f601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF601 10768 bytes
SHA-256: cd0102fedd689524b9591fcf8ef61b3eaa147dad3a6232fd217ff0240cf51a64