Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad18f8fa1e64af03…

MALICIOUS

PDF

79.2 KB Created: 2021-03-07 06:35:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ca16f829af3124b5761ceaed98acfb52 SHA-1: c936f984cb83cee45f30983fa5cbb596898d79bd SHA-256: ad18f8fa1e64af036b90b250988a4343cb7a04b5627497b91f8f7e334243deed
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://golowaki.ru/strik?utm_term=ariens+snowblower+platinum+24+sho PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420604/normal_5fed7b68900df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406501/normal_603ce1bcd184d.pdfIn PDF document text
    • http://fortuneo-enligne.com/keurig_b60_owners_manualnti0u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369508/normal_5ff81c7e1b5fc.pdfIn PDF document text
    • http://itslm.fun/mizawidenalonejataluwesq0b27.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/nuruvapozixix/hollow_knight_voidheart_edition_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/android_studio_sharedpreferences_string_set.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/49000410785.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/the_slight_edge_book_by_jeff_olson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/208dbfdb-a156-45ab-a224-d0e9a417e13e/rifts_rpg_ultimate_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36dfda34-f384-45a9-a922-ef83bc7078a9/zevibozaguz.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/spc_aiag_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ccdf30-1196-41d6-a02f-b078b9d4595d/52481641847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b866f6c-e100-4a7f-ab08-67da3e93ddf4/axial_scx10_iii_transmission_gears.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b60d22a9-dac8-4ddc-8cb9-80f22e051b86/kauai_real_property_tax_maps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd45bdb-b4be-4783-87b5-372130a5be1c/how_to_create_a_hero_banner.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/mailchimp_template_column_width.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/apa_research_paper_format_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89aa535f-03ae-4078-96f3-5bdbce7927d8/werasenulu.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/how_to_train_your_dragon_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/chips_challenge_android_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16491f5d-378f-47ad-8b2b-63dd569ff934/addie_training_model_certification.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_off0000f512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF512 5500 bytes
SHA-256: fac0cde826725881eefb4cbce061cfdf71dee19b8f668cf2216744e5074aff8d
font_01_sfnt_off000107ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AE 11608 bytes
SHA-256: 1a959dcf9bf1fae7d41b126ecd012ce7ca5e67b3868910765d0d95c321d7a484