Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa539adc523c51fa…

MALICIOUS

PDF

80.2 KB Created: 2021-04-09 13:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2812424c892bf83b3544d4addb8c4c76 SHA-1: 0b173fd941aec8e2882192c63aa63aad5ff8c63e SHA-256: aa539adc523c51fa0abc71a16be596790a1e7baf99dc267537960fc2be6f3890
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://jacksth.ru/strik?utm_term=zoom+g11+price+thomann PDF link annotation
    • http://xuwuvewisin.mypressonline.com/39005636436.pdfIn PDF document text
    • http://pewujok.mypressonline.com/libros_del_blog_del_fotografo_gratis.pdfIn PDF document text
    • http://xamojopilupivo.scienceontheweb.net/muslim_baby_names_with_meaning_free_download.pdfIn PDF document text
    • http://fomoregekamikat.mypressonline.com/maruti_suzuki_vendor_quality_assurance_manual.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/freund_j._e._mathematical_statistics.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/dr._berg_s_new_body_type_guide_free.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/spyder_paintball_guns_amazon.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/sojuxezigijupawarativi.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/risegemifejizokibiledejow.pdfIn PDF document text
    • http://basagutidabe.sportsontheweb.net/allelopathy_in_agriculture.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/seriposuj/world_of_darkness_rpg.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/ansible_template_src_dest.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/xugogoxekutevin.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/67339347777.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/1_2_inch_sheetrock_on_ceiling.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/the_mortal_instruments_city_of_bones_book_series_in_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c027898a-c688-4f63-8b6b-ac666ba56016/christmas_jazz_real_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/zewosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de9a153f-31bf-4683-8c22-568146c4ec61/how_many_dragons_are_in_wings_of_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/free_animated_template_for_microsoft_powerpoint_2010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0121dec-7145-4955-b44d-f44e46e20ffc/maytag_quiet_series_300_dishwasher_control_board.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_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 5148 bytes
SHA-256: 6a5f53979208a12e615fc031832a96e16d854f68425db5c4eb5dcb4a685fa9d2
font_01_sfnt_off00010be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE5 11208 bytes
SHA-256: b730a397c665575b118cc9e572abfa440d7a68cd12b4d3cb5739c3b92c931813

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