Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7feee443fd5e9be…

MALICIOUS

PDF

78.2 KB Created: 2021-02-26 04:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 309dc23772ad45b65b87a9d7ecaee062 SHA-1: 7479f25d07bc0f0ab9ec40c3680efc0af12688f3 SHA-256: f7feee443fd5e9be409c1bbd9c3a058b063e601b4c2d780aa80e1fbbda1afd70
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=how+to+draw+easy+stuff+on+procreate PDF link annotation
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/rojamekov.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/1258882.pdfIn PDF document text
    • http://jefopojat.iblogger.org/gifuvaw.pdfIn PDF document text
    • https://turabebusaweni.weebly.com/uploads/1/3/1/4/131438207/zalizepexume.pdfIn PDF document text
    • https://walowopus.weebly.com/uploads/1/3/5/2/135295279/nirufagove_givewoko_dofupo_dusavibew.pdfIn PDF document text
    • https://jivowewowigopap.weebly.com/uploads/1/3/1/6/131606746/d2f96f11a1597.pdfIn PDF document text
    • https://zusajozaza.weebly.com/uploads/1/3/1/3/131381142/peditaziporo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_600e5d2a29c81.pdfIn PDF document text
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/witagusivadoxuj.pdfIn PDF document text
    • https://rijixovo.weebly.com/uploads/1/3/5/3/135339233/2008809.pdfIn PDF document text
    • https://kepijifawobi.weebly.com/uploads/1/3/5/3/135388201/fapiwalola_totulup_xovutijigad_sifose.pdfIn PDF document text
    • https://badobokitevobux.weebly.com/uploads/1/3/0/9/130969603/adbcc.pdfIn PDF document text
    • https://wesoxuzepa.weebly.com/uploads/1/3/4/3/134372623/bexewexaxaseku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fologipuvug.epizy.com/josiwosu.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_off0000f516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF516 5272 bytes
SHA-256: 4c819df37c8b7e18c2ca129c365d4f5327ed4ff8d135417310dbb786c186a71a
font_01_sfnt_off0001072d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072D 10764 bytes
SHA-256: c498fbc0f6773d3e847c02c05948559fdf5121ae00097f2cfda6f680aaed0ab9

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