Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43841e43de4d93e…

MALICIOUS

PDF

84.4 KB Created: 2021-03-11 04:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 252e75fb1182de4c02635919647dba0d SHA-1: b71b31fd1a3916331f8235eefd44d3019064dc4a SHA-256: f43841e43de4d93ef989cfe84e693ce6012f832776dd0117913d5ceb04106a06
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, many of which point to disposable domains and are likely intended to host malicious content or redirect to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document's content and structure suggest it's a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/strik?utm_term=bebop+scales+guitar PDF link annotation
    • http://businesslinecenter.com/epub_to4r61t.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/39537741464.pdfIn PDF document text
    • http://marketitaly.info/92430596152uu01w.pdfIn PDF document text
    • http://yourcy.com/how_to_train_for_football_season_workl85cb.pdfIn PDF document text
    • http://wapazezaduv.iblogger.org/modal_verbs_examples_german.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490273/normal_601690b668591.pdfIn PDF document text
    • http://bilkaita.space/merittrac_aptitude_questions_with_answersn5srw.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/rimekulaxiwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488090/normal_603e35a69033c.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/80566796658.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jutejuviwolopis.rf.gd/example_of_works_cited_page_mla_format.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/gcse_maths_past_papers_model_answers.pdfIn PDF document text
    • http://donamekadozuxuk.rf.gd/network_security_engineer_career_objective.pdfIn PDF document text
    • http://vegigekud.epizy.com/57508655956.pdfIn PDF document text
    • http://rafidomemekovig.rf.gd/74196409906.pdfIn PDF document text
    • http://xubaforan.epizy.com/pdf_abortus_imminens.pdfIn PDF document text
    • http://fanalejowegop.atwebpages.com/futobi.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/85041287803.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/lifugeku.pdfIn PDF document text
    • http://ralivapoked.epizy.com/lowexaruzetexedibobukalo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DA 5068 bytes
SHA-256: 8419206f03e45267a249a79d9fd425f4c59053ebc5c1450cd443b3f84caa813c
font_01_sfnt_off0000fb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2C 11128 bytes
SHA-256: e07d72529f9a7d41b753a2962769b0d31da65b46e6ca8d4a908580367339aaa3
font_02_sfnt_off00012107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12107 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd
font_03_sfnt_off000135ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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