Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29f44883438e160…

MALICIOUS

PDF

75.4 KB Created: 2021-04-22 13:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0ddccff1ba3ea64f2fff1865ac2e6660 SHA-1: c602c66a38b4b6b5802e920ae8ddf28cdfac6277 SHA-256: c29f44883438e1609d2bf69da980cf325dd844da74c3af8dac7d931f03ee84f9
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and a document body that attempts to disguise itself as helpful information about Xbox issues. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware sites. The presence of multiple external URIs and link farm heuristics further supports a malicious phishing or content-luring scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=what+does+it+mean+when+your+xbox+is+blinking+red PDF link annotation
    • http://moxipafuxoxo.mygamesonline.org/luwos.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/toloresaroweloromubuxano.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/fqfHoih/entrepreneurship_and_innovation_course_description.pdfIn PDF document text
    • https://cdn.sqhk.co/zigotimuti/ggibSe8/64975971473.pdfIn PDF document text
    • http://orbitan.fun/bifugekategobowedte4q.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/icbqicx/green_papaya_salad_recipe.pdfIn PDF document text
    • http://xalapuzim.sportsontheweb.net/quiste_de_blastocystis_hominis.pdfIn PDF document text
    • https://cdn.sqhk.co/fekoguwiwu/3Yif13r/who_wins_cash_days_on_street_outlaws.pdfIn PDF document text
    • http://roxifij.22web.org/71062251702.pdfIn PDF document text
    • http://reabook.online/visogepoxelapuporugnpb8.pdfIn PDF document text
    • http://worldworkbook.com/ayushman_bharat_hospital_list_gujaratrel6s.pdfIn PDF document text
    • http://retibojebefav.22web.org/cosco_baby_car_seat_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/zeputefilu/eidyghk/farming_master_3d_game_download.pdfIn PDF document text
    • http://sibivelemeruzu.iblogger.org/my_talking_tom_angela_games_free.pdfIn PDF document text
    • http://lavazapunizala.iblogger.org/what_does_it_mean_when_my_macbook_pro_beeps_3_times.pdfIn PDF document text
    • http://trokot-roznica.xyz/rhythmical_excitation_of_the_hearto00d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogurorirerew.onlinewebshop.net/fukadidil.pdfIn PDF document text
    • http://dudotofuzariw.rf.gd/round_table_talk_ideas.pdfIn PDF document text
    • http://golunelew.epizy.com/sc_drivers_manual_practice_test.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/38519533910.pdfIn PDF document text
    • http://xabazuwodumodo.epizy.com/lanaz.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_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 5716 bytes
SHA-256: a05566cfb1805f5d3d0d4ec2a265dd5605eab1b521465fc239bd12854d516bf9
font_01_sfnt_off0000f91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91A 10780 bytes
SHA-256: 87acdf04514315ec471900da0b93d460d87ba80fe9a63b68c8c6e2461998ea48

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