Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68fdebbe7dc9f51…

MALICIOUS

PDF

70.5 KB Created: 2021-02-16 12:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7a909a761d39178ef8af933692b1a257 SHA-1: d380e0c1a6d09dee7b2eb8d955d0164f4c5824cc SHA-256: e68fdebbe7dc9f515aa5c1d7578cea076370e95fe3a63acf859c714633712ca4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links pointing to various domains, many of which appear to be disposable hosting services. This behavior is characteristic of a link farm, often used for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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 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/strik?utm_term=what+is+the+easiest+thing+to+crochet+for+beginners PDF link annotation
    • https://rokawutavepuma.weebly.com/uploads/1/3/0/7/130776645/929640a8306538.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/93hjDgc/police_scanner_programming_services_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/1Y2hfno/kurujezonetexizopo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412774/normal_5ff9a4a75e173.pdfIn PDF document text
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/6278160.pdfIn PDF document text
    • http://wanulutipumik.iblogger.org/mariadb_replication_report_host.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453528/normal_5fc649bce4503.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/ichbOjd/cruise._com_dania_beach_fl.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/jhjdGhc/descargar_carx_highway_racing_hackeado_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/joxezexukub/o3thjjd/bivobisor.pdfIn PDF document text
    • https://cdn.sqhk.co/bazexolareja/oichehj/34350309422.pdfIn PDF document text
    • http://legovimoz.iblogger.org/medical_fitness_certificate_format_for_admission.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/eQgfjje/bomb_transport_3d_apk.pdfIn PDF document text
    • https://tabivivefevevu.weebly.com/uploads/1/3/4/8/134889686/905620.pdfIn PDF document text
    • https://torosiwetub.weebly.com/uploads/1/3/5/3/135351177/rididiwizi-lepazunidaxekad-letuxonu.pdfIn PDF document text
    • http://rapisakaxo.66ghz.com/adda247_monthly_current_affairs_july_2019.pdfIn PDF document text
    • https://vixikubinimagap.weebly.com/uploads/1/3/3/9/133997110/9122673.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijedenojex.rf.gd/get_late_payments_off_my_credit_report.pdfIn PDF document text
    • http://girupesoja.rf.gd/44818769040.pdfIn PDF document text
    • http://muvaxuzuf.rf.gd/91483034791.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_off0000d60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60E 5264 bytes
SHA-256: e3a586817f902f1e464a8b93ddb5924d3467dc342ee2940d4d0251340f4e22bb
font_01_sfnt_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 9996 bytes
SHA-256: eea473b340d41885806b9e4f3ee301584b5d5dcb8dd33b9b34f5a9f89bdce6d5

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