Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd96e1ff5fe24714…

MALICIOUS

PDF

81.7 KB Created: 2021-03-07 23:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 48b2a5102e4c624587530410f4577b8b SHA-1: 69f190ee61e2bf68dbba4615be77caad52b13038 SHA-256: cd96e1ff5fe247142e9c6cd1d30d08c77565a2068c01e47bde2756dcc20f7ed0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The file contains numerous embedded URLs pointing to disposable domains and link farms, suggesting it's designed to redirect users to potentially malicious sites. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/wix?keyword=head+games+sports+psychology PDF link annotation
    • http://zitukuwekoba.sportsontheweb.net/36306618041.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/trig_function_graphs_calculator.pdfIn PDF document text
    • https://zimemomikinipex.weebly.com/uploads/1/3/5/3/135347479/9649776.pdfIn PDF document text
    • https://xumotisububilup.weebly.com/uploads/1/3/4/5/134591263/waguxit.pdfIn PDF document text
    • http://vukufitu.mywebcommunity.org/the_other_side_of_midnight_movie_youtube.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/29281644704.pdfIn PDF document text
    • https://badosajag.weebly.com/uploads/1/3/1/4/131407507/a026d3c3596b48.pdfIn PDF document text
    • http://bagezokazuraw.medianewsonline.com/bigger_faster_stronger_lifting_program.pdfIn PDF document text
    • http://pirikulifiwitif.iblogger.org/boy_death_sad_status_video.pdfIn PDF document text
    • http://xuvivok.22web.org/apa_6_lab_report_format.pdfIn PDF document text
    • http://terugate.mypressonline.com/20252149407.pdfIn PDF document text
    • http://tiwujatujoput.mygamesonline.org/the_crown_season_3_episode_7_church.pdfIn PDF document text
    • https://togawakavepanef.weebly.com/uploads/1/3/1/1/131163752/2635814.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nototen.epizy.com/babies_r_us_manual_breast_pump.pdfIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_ccec30ec528c426da13046bed4b97cc3.pdf?index=trueIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_f8a04888b8b040818f96db6195316ab1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/linewinupojiwezir.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/sosalubegawovupufuzonav.pdfIn PDF document text
    • http://refakozisakuvul.epizy.com/51010246447.pdfIn PDF document text
    • http://ligozuwi.rf.gd/sony_video_cassette_recorder_slv-_n750_manual.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/hpi_savage_x_4.6_body.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/humminbird_piranhamax_197c_di_fishfinder.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/himno_del_maestro_venezolano.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/answer_sklep_z_ubraniami.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_off00010192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10192 5548 bytes
SHA-256: 10447008ac308fd3b9da8e4eca261e82c6039f99b17e730f4093ba963550f4bb
font_01_sfnt_off0001144c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144C 10848 bytes
SHA-256: 767e131d22d2f3495ad74da0c1b5fee85f4ec7b7205f25b89b2b68de9781617a

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