Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea68ce8055f473b9…

MALICIOUS

PDF

68.4 KB Created: 2021-03-15 17:22:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 841acd4395cc20687a40f7205b9e6d63 SHA-1: 9be5cf156adda6bcdf593e1e1d23a6cbee3c08a7 SHA-256: ea68ce8055f473b95808946c882bcbc3c5556e05bf35087a6ac9846553115950
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fokemale.ru/aws?utm_term=kohler+cv15s+motor+for+sale PDF link annotation
    • https://jumojebanofoz.weebly.com/uploads/1/3/5/3/135302369/12d8e2ed4606f0f.pdfIn PDF document text
    • https://ladunibik.weebly.com/uploads/1/3/4/0/134096621/7b1ba9d.pdfIn PDF document text
    • https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/d4bbb.pdfIn PDF document text
    • https://jonilokakowoso.weebly.com/uploads/1/3/1/4/131453896/luxetegamenu-welepifevozefu-motumirenidumip-bemulafin.pdfIn PDF document text
    • https://ridoduna.weebly.com/uploads/1/3/4/5/134528127/tejevagibu.pdfIn PDF document text
    • https://zududebagulakes.weebly.com/uploads/1/3/3/9/133997448/4812435.pdfIn PDF document text
    • http://paxabak.mypressonline.com/rajamunewukale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nexizali.epizy.com/tezubimuk.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/bissell_vacuum_bottom_not_spinning.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/vaxirodosapixuxuro.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/ziditasaninomabodakoju.pdfIn PDF document text
    • http://kexeban.rf.gd/gimpy_gimpy_plant_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/the_human_condition_movie_download.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/antigone_robert_fagles.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/lukerowudulabefob.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/how_to_use_an_old_aroma_rice_cooker.pdfIn PDF document text
    • http://zetajosovalafu.epizy.com/baldurs_gate_2_viconia_romance_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/all_india_radio_music_audition_form_online.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/how_do_i_factory_reset_my_portal.pdfIn PDF document text
    • http://wigelasipop.rf.gd/deposition_errata_sheet_deadline.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/add_footer_to_wix_page.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBB 5324 bytes
SHA-256: 616f82ad0c4fcdb77a493c785c791d00d2ea5e20264bbe8f86c96154911b5581
font_01_sfnt_off0000e1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C9 10204 bytes
SHA-256: 31a3a01504b0981317b69660b871619a1b119cc99e201c52488271315e1643f6

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