Malicious PDF — malware analysis report

Static analysis result for SHA-256 65055e2d019f50da…

MALICIOUS

PDF

84.3 KB Created: 2021-02-27 21:00:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eb8f7a5f3312a42b15751e013d3e5b51 SHA-1: 292bfe4f2c9bcafbac482e5e0606c8ce7fb7fbe8 SHA-256: 65055e2d019f50da587df0edb987b1088c598e28c5ae32a8da3573f28598efed
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains embedded URLs, one of which is a link farm on disposable hosting, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/award?keyword=best+anatomy+books+for+nurses PDF link annotation
    • http://amsidisi.xyz/ford_555_backhoe_parts_manualcpyxs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478134/normal_6004f07f0864b.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/22f21bec8c8f.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/maytag_neptune_dryer_not_drying.pdfIn PDF document text
    • http://dijobojanojo.22web.org/answering_machine_applications.pdfIn PDF document text
    • http://tortomsk.ru/mixefejowemikmq3vs.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/56934569153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460465/normal_5fd1f36da05f5.pdfIn PDF document text
    • http://timinome.getenjoyment.net/siruxolexaluvufem.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/saeco_incanto_super-automatic_espresso_machine_review.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/what_are_the_three_theories_of_motivation_in_psychology.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455916/normal_5ffa131eaf887.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/1051041.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/how_to_reset_honeywell_thermostat_rth2300b1012.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuboxigaxa.rf.gd/fijebeb.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/how_to_cite_wall_street_journal_bluebook.pdfIn PDF document text
    • http://zopoxasemegivo.epizy.com/the_hound_of_the_baskervilles_chapter_14_analysis.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/bumiwefewodabitalujunugas.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_off00010da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA8 5236 bytes
SHA-256: 03b9bd314e9bda0fe2c9de628ff3393302158efbae7b0479a76e55f3e6a0c81b
font_01_sfnt_off00011f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F74 10644 bytes
SHA-256: 9694ece05dc3a89f7e094d9be255031b20ac50c18cce217598cb9c504d398517

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