Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ee658efd896021…

MALICIOUS

PDF

74.4 KB Created: 2021-04-01 03:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0ee204c407d3b08f8e4400b63ea0d1ab SHA-1: beab037325541de4dad80c969f553c9d37a322a1 SHA-256: e5ee658efd8960210cd983891f56868cc7e6816a3e2d8b0fad29ac37b3e4f4bd
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://dugedepap.ru/wix?keyword=samsung+microwave+manual+me18h704sfs', is presented as a search result for a microwave manual, likely to trick users into clicking through to a malicious site. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a phishing or redirection attempt.

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://dugedepap.ru/wix?keyword=samsung+microwave+manual+me18h704sfs PDF link annotation
    • http://tujubafi.getenjoyment.net/35448260626.pdfIn PDF document text
    • http://lujuvudav.22web.org/tigipogazodana.pdfIn PDF document text
    • https://jagavovukivotu.weebly.com/uploads/1/3/4/8/134881855/dukubabev-vavuwixemafewa-likifuv.pdfIn PDF document text
    • https://xazefobilizap.weebly.com/uploads/1/3/1/3/131384081/8235972.pdfIn PDF document text
    • http://sokobumoxagug.scienceontheweb.net/29934518579.pdfIn PDF document text
    • https://pabekebu.weebly.com/uploads/1/3/5/9/135990513/pevikilama_kabusa.pdfIn PDF document text
    • https://firulozide.weebly.com/uploads/1/3/0/7/130775295/8737716.pdfIn PDF document text
    • http://pepufur.22web.org/jemesomudegixulibowise.pdfIn PDF document text
    • https://pafolerasakuj.weebly.com/uploads/1/3/1/4/131438226/dubov.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/telugu_panchangam_january_2015.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naxefugoxodikow.atwebpages.com/creative_writing_open_university.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/kunugatoza.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/best_dating_site_app_free.pdfIn PDF document text
    • http://mesuwirafifi.rf.gd/92203887305.pdfIn PDF document text
    • http://vakifavu.onlinewebshop.net/69220148909.pdfIn PDF document text
    • http://dizojid.rf.gd/sociology_of_sport_journal.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_off0000e2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CC 6108 bytes
SHA-256: 8be0e4ba13ac2d9c5f8fd7e3b0c94a78dee3dc4610212a16bbb8c9a76245a84f
font_01_sfnt_off0000f790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF790 10868 bytes
SHA-256: bac4f3a4b3f508e8ac5d60ab9c608594ed7d027c842a99bd963ad0c0769cb310

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