Malicious PDF — malware analysis report

Static analysis result for SHA-256 2385584d4bcbb28d…

MALICIOUS

PDF

85.9 KB Created: 2021-03-21 06:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 066d5c61ad95d9187291a14e0ae71ebd SHA-1: 95592714d33b093d2ff72b577b958069a9e7ca79 SHA-256: 2385584d4bcbb28d4bd491b7ac568dbd0b31629777915ba6054b292d35286364
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. While no scripts were directly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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.
  • 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.
  • 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://maypoin.ru/123?utm_term=hypokalaemia+guidelines+uk PDF link annotation
    • https://cdn.sqhk.co/xorunase/ugjhpji/amazon_golf_tees_callaway.pdfIn PDF document text
    • http://bred-enligne.com/war_and_peace_summary_tagalog0ar18.pdfIn PDF document text
    • http://devgame.design/3120937643006iht.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484364/normal_603b9d0b62474.pdfIn PDF document text
    • https://cdn.sqhk.co/vinikawikuve/gyhbhhI/td_auto_finance_canada_contact_hours.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450041/normal_5fd136aa2115d.pdfIn PDF document text
    • http://servicesforsupport.com/gabufipi6o9n1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_6042ee3255e27.pdfIn PDF document text
    • http://vertigoa.online/837369980715fmtp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_604aa2037d30f.pdfIn PDF document text
    • http://allrecipes.pro/something_beatles_sheet_musicioc2p.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/wegugus/59257520651.pdfIn PDF document text
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_af455159c7e84496848ae1071b3f1f0e.pdf?index=trueIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_cf50ec1893714a78a5240c28f7cf8d10.pdf?index=trueIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_8bd30d7f4c9142f4a1da51d68e876e6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pewibim/gaurav_agarwal_ias_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/where_is_the_nearest_baby_gap.pdfIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_5c2258f448c84468bf2a04b4101ede6c.pdf?index=trueIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_7a0a565af39148a7ba6817367d58ebfe.pdf?index=trueIn PDF document text
    • https://02687da8-bf2b-436b-a8ca-82c6e04513a5.filesusr.com/ugd/e48f8a_06a1a05cdeb7402c8ac2919dd94548bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rotowan/jisilujuzodi.pdfIn PDF document text
    • https://5d55c623-01b0-417f-8131-8dfd0334080c.filesusr.com/ugd/9ef046_253d04eec61e43e1b63b1b99dfe5cec7.pdf?index=trueIn PDF document text
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_54dc488fc9384a50bb6a9c781e8a2553.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/davawina/77801922589.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 5308 bytes
SHA-256: b4e55500d0929b21549ee5779def3d76a70a875b9ac143b5dda3055cae050fe2
font_01_sfnt_off00010e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E67 11120 bytes
SHA-256: 8425f65be720a3712a2e6e54d29a73a56da18a2cb786f333fd5e4669b4cf28b1
font_02_sfnt_off00013473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13473 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

Open this report in the interactive analyzer, or submit your own file for analysis.