Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e30bcfb6119783…

MALICIOUS

PDF

78.5 KB Created: 2021-04-04 13:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: f831e7e03ef4a4e3c0fed1128775a565 SHA-1: 00e493fe5085da77969ccdd75e7dec9751b75537 SHA-256: f7e30bcfb6119783eff06d82a7f30dc3b4bed6093fe604188cca8466aa86f75b
134 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a high number of external URIs, many hosted on disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for distributing further payloads or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://resalured.ru/123?utm_term=motorola+apx+6000xe+user+manual PDF link annotation
    • https://cdn.sqhk.co/baxafapunubi/ymjcicv/raksha_bandhan_songs.pdfIn PDF document text
    • http://pannochki-art.com/86224881166hipeh.pdfIn PDF document text
    • http://mmmmmme.space/in_the_room_2016_moviehgy3r.pdfIn PDF document text
    • https://cdn.sqhk.co/wesebewoweva/xichdjf/jagiv.pdfIn PDF document text
    • http://forisawidokomor.sportsontheweb.net/sbi_exam_books_free_download.pdfIn PDF document text
    • http://rupazaduxil.mywebcommunity.org/37330509442.pdfIn PDF document text
    • https://cdn.sqhk.co/fularulojoze/hdwUJhc/35364832560.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/3icaIhf/4_pics_1_word_level_1866.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b391aaf5-59fe-44b1-9ff2-f3fd6abdf11e/fawadonovolarudagupadene.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/rerovesumibuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71507a9d-568e-4753-b436-b9134ead7012/mini_jambox_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/biwetinokiwesokukivudiwes.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/30676291911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fe736bd-e390-45aa-aa49-4fd4b2769461/tipipiruvumulit.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/kafirurigosuxogod.pdfIn PDF document text
    • http://dozuxix.myartsonline.com/what_is_a_navajo_code_talker.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/washington_nationals_schedule_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/eve_online_asteroid_mining_guide.pdfIn PDF document text
    • http://mibarup.epizy.com/phases_of_curriculum_development_process.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e36a203d-9139-41ab-9cc2-2415f5a45aaf/dbt_handouts_worksheets.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_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 5332 bytes
SHA-256: af65bce2052532c93ec16e626179d3a3ff2e1f532133986850a5956a24845edd
font_01_sfnt_off0001079d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079D 10984 bytes
SHA-256: b86b64dbc2c4beb4ff7d073da4ce4984ebf05c3a9a863e73eebdab9a87f203cd

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