Malicious PDF — malware analysis report

Static analysis result for SHA-256 466d097d4b179235…

MALICIOUS

PDF

73.9 KB Created: 2021-03-17 04:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 72efdcd6cf9a0d3e25b52e3506581d40 SHA-1: 9908d5680a86b774bf57f91e80734204753f8092 SHA-256: 466d097d4b1792358e78bbe9e1fa1558f9c88516559da7a8f7ca454b7826d3b4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and link farm heuristic point towards an attempt to leverage external resources for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jumiwimov.ru/strik?utm_term=when+the+light+went+out+in+georgia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387061/normal_604e1aa98c524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_60288ec8c1d55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426974/normal_604ed22423e1e.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/fgiwxYT/jojo_siwa_live_to_dance_apk_mod.pdfIn PDF document text
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/sejumeronarabiluxe.pdfIn PDF document text
    • http://fitojijumuta.22web.org/delhi_desawar_satta_aaj_ki_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_602a762ea5385.pdfIn PDF document text
    • http://zofugef.mypressonline.com/tipos_de_radicales_libres.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/jdgjLkp/3597705977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481418/normal_600fcc589513d.pdfIn PDF document text
    • https://fewabupa.weebly.com/uploads/1/3/4/5/134584226/gojigugurejuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485580/normal_602d63089615c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mawafomixo.rf.gd/manual_alesis_dm_lite_kit.pdfIn PDF document text
    • http://lilufunom.epizy.com/scottish_bagpipes_funeral_song_free.pdfIn PDF document text
    • http://sukokovevaz.atwebpages.com/what_does_e1_mean_on_my_omron_blood_pressure_monitor.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 4876 bytes
SHA-256: 3248e12b8eb42ff2255bb48344dd3b5c073329042a6f1bb710255c8c0f38c58f
font_01_sfnt_off0000f0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DA 12016 bytes
SHA-256: 1d257c730406e321ed54e51e4f96dc3f2d1e36614bba7848166b3f674014c1f9

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