Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e23716d72bfcae…

MALICIOUS

PDF

84.8 KB Created: 2021-03-26 09:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: afe5491a5f1addbabec6291cbd80b695 SHA-1: b6725cccf62bc298d4f9c430674887ae6688c3e6 SHA-256: 07e23716d72bfcae6859b003879c99c529add16e8d5e9a5e51a722b2d115bef9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://fokemale.ru/123?utm_term=believe+josh+groban+piano+sheet+music PDF link annotation
    • http://kaxiwemusemoj.mypressonline.com/is_pokemon_go_popular_2020.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/kindergarten_letter_tracing.pdfIn PDF document text
    • http://lujuput.22web.org/197428906.pdfIn PDF document text
    • http://roselosudeve.sportsontheweb.net/65761881360.pdfIn PDF document text
    • https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/javoketiwowif-lijopijuwe-wagopobiveked.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/ashrae_handbook_fundamentals_free_download.pdfIn PDF document text
    • http://fewomazojuxed.iblogger.org/49870734649.pdfIn PDF document text
    • https://gagejewepaji.weebly.com/uploads/1/3/4/4/134444149/dowumepene.pdfIn PDF document text
    • https://tubuzitobez.weebly.com/uploads/1/3/4/1/134108618/e70139cf7bee.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/950c1.pdfIn PDF document text
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/tusubuwofejija.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutesejib.onlinewebshop.net/briggs_and_stratton_625e_series_190cc_carburetor.pdfIn PDF document text
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_7942fb7b00874756b8a42edfd98d5084.pdf?index=trueIn PDF document text
    • http://wekolukore.epizy.com/ponelepujojapeponojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/178299fc-38bf-4fb9-81c1-2e67ffd0473d/introductory_mathematical_analysis_for_business_economics_13th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980f5b9c-9f7e-4fd0-a489-54022f3f6505/how_to_connect_mac_to_samsung_smart_tv_bluetooth.pdfIn PDF document text
    • http://kudawugijamino.rf.gd/guker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ddcfc4-5af5-40bb-9a5a-58af9a21760c/icd_11_classification.pdfIn PDF document text
    • http://revodez.myartsonline.com/agoraphobia_dsm_5_criteria.pdfIn PDF document text
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_2bf194032f91493d9c5c56bcda6c4946.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/250d568a-66cd-4f5d-8e3a-d91d97a0f6a0/how_do_i_use_my_lowrance_elite_7_ti.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_off00010aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAC 5672 bytes
SHA-256: 99dbb3387b3b6d8dde29133143098acde99f919a82cadb6795573b758c65e571
font_01_sfnt_off00011de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE1 11256 bytes
SHA-256: 7dde38bff69ed5404bf07fdf5c7987444d374fe22d2f3f4db1175f215e72393a

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