Malicious PDF — malware analysis report

Static analysis result for SHA-256 f765001a2b6ed433…

MALICIOUS

PDF

86.1 KB Created: 2021-03-01 17:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1d8c81aca6e9e0d8c6f40ddab85ddd7b SHA-1: 14448c78f4f65f9ea2ac87bf047a3977521c9a12 SHA-256: f765001a2b6ed433e40a8e3bf9b71453ec1e5d6b449f5a250e3654a0b89e9a8e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that mimics a search result for a manual, suggesting a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing. No scripts were extracted, but the presence of an external URI is a primary indicator of a potential download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=toro+recycler+22+manual+pdf PDF link annotation
    • http://bestita.space/oblivion_item_listdho62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415334/normal_5fcedb2292e73.pdfIn PDF document text
    • http://wamikesaximilub.22web.org/minecraft_cracked_1._14._1.pdfIn PDF document text
    • http://allwoman.site/o_candidato_honesto_1_filme_completosgubb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475874/normal_5fe32d65e104d.pdfIn PDF document text
    • http://verexexomebot.iblogger.org/ramesozujowemofikukenumu.pdfIn PDF document text
    • http://chatik85939775.fun/soul_keeping_john_ortberg_videor52y6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375702/normal_5ffc6ab542352.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pinezininefos.epizy.com/comprehension_worksheets_ks2_sats.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/kojusopekunugonikilom.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/nonefaravozovirowelar.pdfIn PDF document text
    • http://padadubijimesib.epizy.com/66833895082.pdfIn PDF document text
    • http://bagemok.epizy.com/46680350706.pdfIn PDF document text
    • http://vepejiwuj.rf.gd/rudabilawenepafesixeve.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/vefipopil.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/which_of_the_following_is_the_calculation_for_free_cash_flow.pdfIn PDF document text
    • http://savikolapuxol.rf.gd/8505999652.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_off00010ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA1 5308 bytes
SHA-256: 846d1f6aec22f1d93a2ffc10a1a1f59020be70939fff9939a022e336796b828a
font_01_sfnt_off00011da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA5 14936 bytes
SHA-256: 15ba75f02713498a83e22e236bac3a728913cb01b52cee8cc1cf754808630234

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