Malicious PDF — malware analysis report

Static analysis result for SHA-256 3696cecccacf441e…

MALICIOUS

PDF

72.5 KB Created: 2021-03-22 08:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3e9e4ab33080529d75bcebdad30445fb SHA-1: 612be76a390e435d0194ea739515914a3c654432 SHA-256: 3696cecccacf441e68c3528fcffea30e74a22a8e304f27a2c7a7449a2b5af79f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and the overall structure align with techniques used to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://seumenha.ru/wix?keyword=connective+tissue+matrix+worksheet PDF link annotation
    • https://zowukabizuvor.weebly.com/uploads/1/3/1/6/131636697/733130.pdfIn PDF document text
    • https://cdn.sqhk.co/sononipo/p37cCjj/party_invitation_template_wording.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/hchaTge/26034638713.pdfIn PDF document text
    • http://ketousa.site/pablo_neruda_poetdsd2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_602e242cdefc1.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/gjzjdid/41418364310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_5fd1cad62fa21.pdfIn PDF document text
    • http://argo-tourism.com/ronawogitovpihxi.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/eRliej7/epson_iprint_pour_windows_7.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/naruvazo.pdfIn PDF document text
    • http://ledy66.net/83763616704oyya6.pdfIn PDF document text
    • http://vehicleinsusa.com/xozirafixamogamapufu3gdqp.pdfIn PDF document text
    • https://lekamenofujilap.weebly.com/uploads/1/3/4/6/134690267/1888021.pdfIn PDF document text
    • http://parkji5x.xyz/907664634047840r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_603d3992e0ee9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460048/normal_60039de98bcb1.pdfIn PDF document text
    • http://yourbigdick.space/afterburn_aftershock_sylvia_day_goodreads30hac.pdfIn PDF document text
    • https://dubezotamepaloj.weebly.com/uploads/1/3/5/2/135297843/sokobobexet.pdfIn PDF document text
    • http://goldalbum.ru/fufefipodekidiretatufilaslb9h5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_6029455694c19.pdfIn PDF document text
    • http://wrestling-mma.com/1577786144eijah.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/jRphc9c/electronics_objective_questions_and_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuvuzonixo.onlinewebshop.net/53989786941.pdfIn PDF document text
    • http://gototura.myartsonline.com/brother_pt-p900w_label.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/53223332975.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_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 5196 bytes
SHA-256: adb1500025d2fc2503a9c5639e35d6f67b43bb22c376095037561737d087b96b
font_01_sfnt_off0000ef65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF65 10808 bytes
SHA-256: 09a905544f4faddc3fc90b25a4588ce5277d111520dc71b24bbdd61db8f533a1

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