Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fd55f44b08edca…

MALICIOUS

PDF

95.0 KB Created: 2021-02-25 19:29:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 8f859666543faf52f789c4bfe5072fe9 SHA-1: 9c314fffab43f04c3c3cc16819b6ce35e2cee745 SHA-256: e6fd55f44b08edca7fbb06cec2af6e32a8421ef2a17d3425728a0316ab27d362
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, forming a link farm on disposable hosting, which is a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=black+maltipoo+puppies PDF link annotation
    • https://vipizavubo.weebly.com/uploads/1/3/1/4/131407691/937561.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/70124022713.pdfIn PDF document text
    • http://monufovaxuj.66ghz.com/45904178899.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/5a15bd4ebccd.pdfIn PDF document text
    • http://sutonazijusi.iblogger.org/kabas.pdfIn PDF document text
    • https://xomadugazulu.weebly.com/uploads/1/3/4/5/134597447/kavosogol-guzozezuponu-xefaguto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_601e89f8dfa65.pdfIn PDF document text
    • https://xosulokut.weebly.com/uploads/1/3/4/4/134466674/5096102.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/35457108001.pdfIn PDF document text
    • http://kefojixesopu.66ghz.com/xuzimojosowezudukaxo.pdfIn PDF document text
    • http://gemotebefid.22web.org/aprilaire_model_1830_manual.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/why_is_the_screen_on_my_thermostat_blank.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bakilipos.epizy.com/98968631630.pdfIn PDF document text
    • http://vikenigekewojo.epizy.com/99050018284.pdfIn PDF document text
    • http://zagopemolal.rf.gd/sujipuvudenas.pdfIn PDF document text
    • http://xugowosapiri.rf.gd/fewonosefukojipagijibav.pdfIn PDF document text
    • http://nopatiget.epizy.com/weather_report_in_telangana_adilabad.pdfIn PDF document text
    • http://baxamudixilado.rf.gd/washington_state_university_majors.pdfIn PDF document text
    • http://maboduxivugiv.rf.gd/word_association_test_sample_papers.pdfIn PDF document text
    • http://kotidaw.epizy.com/dutajeditovekexedefejafar.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/mevuju.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_off00013978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13978 5096 bytes
SHA-256: 1f89f5a91d3252154e360cae7ad2f095fd17875325691cb5c9e0541a4f568d54
font_01_sfnt_off00014abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ABF 10568 bytes
SHA-256: 820a35b9de7913fcf7a0ad64d8c290b275bc1e5004f93a313bc2cf5aaa161195

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