Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa09c59f88f323f…

MALICIOUS

PDF

77.5 KB Created: 2021-03-12 20:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a3d1eab04165cbc601902916b7472876 SHA-1: 5ae434d410372425074f5e63e6c68e205577be3f SHA-256: eaa09c59f88f323f27100126837de2eff90230544852858e6eb335861f099ce6
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • 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/strik?utm_term=what+is+postage+for+overseas+letter In PDF document text
    • http://fimunukowira.iblogger.org/23649646332.pdfIn PDF document text
    • http://indir-kazan.com/modal_verbs_listening_exercises_british_councilbpo69.pdfIn PDF document text
    • http://gaximivotekole.mypressonline.com/ao_smith_water_softener_reset_button.pdfIn PDF document text
    • http://wotedogupowu.sportsontheweb.net/oppo_bdp-105d_usb_dac.pdfIn PDF document text
    • http://gateguge.22web.org/82632618674.pdfIn PDF document text
    • http://kumajamefe.getenjoyment.net/the_lord_of_the_rings_cast_now.pdfIn PDF document text
    • http://shoppingyxplus.xyz/duludejivegipajd7m.pdfIn PDF document text
    • http://shimano-stradic.ru/vufizu6eupw.pdfIn PDF document text
    • http://makebugobiwuka.mypressonline.com/botulinum_toxin_aesthetic_medicine.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/wovugi/bipato.pdfIn PDF document text
    • http://degejukifukux.epizy.com/galactic_civilizations_2_custom_race_guide.pdfIn PDF document text
    • http://talakukatutevib.epizy.com/degaxopav.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/vofukatenewoneroku.pdfIn PDF document text
    • http://purewowesajumu.myartsonline.com/ruvulupewawusarimisus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643d6195-a6ee-4405-87d2-0e7f9a4d3a3e/sogekidide.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/navy_seals_symbol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b53ddd-11ec-40bd-a03b-ca2cf348154d/kumos.pdfIn PDF document text
    • http://fikelamizogu.myartsonline.com/72498543150.pdfIn PDF document text
    • http://pujumek.myartsonline.com/malaria_parasite_metabolic_pathways.pdfIn PDF document text
    • http://bideliv.rf.gd/odia_song_video_dj_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/78513524770.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/tlcharger_livre_de_cuisine_algrienne_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e293900d-d352-4aa5-bde8-b5e3feea41cc/general_chemistry_crash_course.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_off0000f129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF129 5236 bytes
SHA-256: c6574dd15b50d8e476e169420b91777ca364c4bd27c684781965f178b254e62b
font_01_sfnt_off0001030f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030F 10988 bytes
SHA-256: db2d6fc161c1e5cdaad7b673a028d04a4d1475070301d3b4a66e5e7fc21974c7