Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa04c7268b0dde7f…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 23:59:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6d8c067e1894d33c99ec6eb056f8751a SHA-1: e5a69ce195890f514d52d604da215526811c999f SHA-256: fa04c7268b0dde7f25ef34b83ffab9ae91e08f7d41bef7293a1bc98476fbc940
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to disposable domains and redirectors, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=hampstead+school+district+number In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450734/normal_5fdfc9dedb39b.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/replace_headlight_assembly_on_2005_dodge_ram_1500.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/attack_on_titan_manga_last_chapter_release_date.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5ffb820fad370.pdfIn PDF document text
    • https://cdn.sqhk.co/beratinuga/ihaifhg/samurai_2_swords.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375887/normal_5fdc334a83744.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/honeywell_6000_wifi_thermostat_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/nufolibizer/icFgc2L/68805377383.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/zexepopomugorivavovegoleb.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/8Mgjha1/pisoso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367941/normal_5ffeabacec9c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fd8a16ee5aef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lolefijulakemi.rf.gd/toniolo_cemento_armato.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/birthday_cake_pictures_hd.pdfIn PDF document text
    • http://kenugaderagof.epizy.com/61296930878.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/25084482817.pdfIn PDF document text
    • http://riluromeni.epizy.com/zuzetorikolugakesafetud.pdfIn PDF document text
    • http://fereralud.epizy.com/comprehension_worksheets_for_grade_3_english.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/ropuwegima.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_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 5416 bytes
SHA-256: 69873d9857a720cd5f33a1599b4a601ef01c8fda58f86d860141c783de23e890
font_01_sfnt_off0000ebc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC9 10788 bytes
SHA-256: f6a47f983928d9bbd68f6647b041f18673a0fc80f3ade87dc5e19fa26e9fc628

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