Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a77bbdc672374c7…

MALICIOUS

PDF

139.8 KB Created: 2021-05-06 09:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 926b16787c72af04431e50e4162146f6 SHA-1: 5880e21d78bf4b83d61ff35b93a91c725f1eeef5 SHA-256: 2a77bbdc672374c73aa23b602c631d408809d0286a40ad2b5defe87a7307a293
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a lure related to 'asian literature' and embeds a URL pointing to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

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
  • 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://bologen.ru/strik?utm_term=what+is+asian+literature+all+about PDF link annotation
    • https://cdn.sqhk.co/potasuregoz/hegdd0r/bike_rider_helmet_camera.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/eCjePjd/79790056207.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/hLigigl/game_room_solutions_arcade_control_panel.pdfIn PDF document text
    • http://samelike.site/90141832630t6bu.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/jchc3gj/rusos.pdfIn PDF document text
    • http://websporizle4.com/enigma_otiliei_magyarulkt154.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonaxadu/hjjgdhg/descargar_my_talking_ginger.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/jbjfOGR/texas.pdfIn PDF document text
    • https://cdn.sqhk.co/jenotonolo/58zjc2Q/convert_electric_meter_reading_to_kwh_calculator.pdfIn PDF document text
    • http://toportt.online/vemobibapolutetev4if50.pdfIn PDF document text
    • http://trenketo.buzz/wu_tang_clan_saga_episodesalgj8.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/hie4hb0/fizimokojutisunesibasum.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/fizaxo/56354446898.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/sizedoduxi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/battle_trip_episode_146_sub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/how_to_get_a_child_with_adhd_to_pay_attention.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/digupizowotoxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e6f473-2175-4736-8ebc-ab712c40bd98/26252149893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b2cd03a-c923-4d52-b728-1396b02c0116/garmin_uhd_94sv_transducer_options.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/nekugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4957d5c-d243-4910-a651-b7b3330e38fe/bose_soundbar_700_remote_not_working_with_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/goponidujogepomil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc2e8c80-fc6b-47de-9695-dc7839ab7bdc/warcraft_2_battle.net_edition_download_mac.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_off0001e8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E8DA 4928 bytes
SHA-256: 7414972884ead938f3fe0d8f10922dd8589ac9bece7890faa52c7efc6bb26df5
font_01_sfnt_off0001f99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F99E 11744 bytes
SHA-256: 22c1f5417b9e54da11521fb8b903abb0c9a18239b36797bd56bdf7295c55dc84

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