Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa83750fc107c2a…

MALICIOUS

PDF

82.2 KB Created: 2021-03-25 09:22:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e9804eee9391db8349716061490d8d34 SHA-1: efece2db9cb2352ceebee04b7ad71276c7c70a7b SHA-256: 4aa83750fc107c2ab309ada753cc8e23b11c7c9b85805acd96097707a88bf9db
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://crophysi.ru/wix?keyword=minecon+2020+cape+leak PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369912/normal_5fe33380be6ec.pdfIn PDF document text
    • http://shopbest.online/lapetofukemexokegaliwemp0372.pdfIn PDF document text
    • http://velixone.66ghz.com/expressing_yourself_billy_elliot_sheet_music.pdfIn PDF document text
    • http://italysummer.fun/lancing_steel_build_guide6c9zy.pdfIn PDF document text
    • http://dom-bita.org/deleuze_societies_of_control_book7kptv.pdfIn PDF document text
    • http://getyourcredit.info/zepizijidoratizurarigzlo9.pdfIn PDF document text
    • http://prizinsta365.site/the_secret_history_chapter_7_summaryvu03a.pdfIn PDF document text
    • https://cdn.sqhk.co/birofinud/cghwjc6/dunifikinu.pdfIn PDF document text
    • https://cdn.sqhk.co/xivijela/RmfheNN/dictionary_of_obscure_sorrows_sonder.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/jggehfO/tunomedugavevupusoketix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451565/normal_6058d257bf108.pdfIn PDF document text
    • https://cdn.sqhk.co/laxuweredex/zhc3bjd/soldadura_aluminotermica_en_rieles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420767/normal_605b9e3fc601b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_8ed3d47c2dbb41d4b35746b057d05cf7.pdf?index=trueIn PDF document text
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_24529c3422f245d8b72d7031859db64e.pdf?index=trueIn PDF document text
    • http://rujemivegelap.epizy.com/blender_3d_eevee.pdfIn PDF document text
    • http://nijopupeboxisa.epizy.com/moxijikasaluxuzagiwer.pdfIn PDF document text
    • http://wikidupuzok.epizy.com/nekilunenirotakaw.pdfIn PDF document text
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_28ecb46b486b40c8bba130d7b268f9e2.pdf?index=trueIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_525527892dfc488e98760b1e209ac769.pdf?index=trueIn PDF document text
    • https://492f55f4-3442-4b37-b17e-39d9f2f0ae8a.filesusr.com/ugd/7dfe85_ce97b151af1045bdbb339f7fa477b858.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA5 4996 bytes
SHA-256: 0f3fd9b209c120107e9dc19649394498c05cbe32d3af495a8418af0b3d8aed8a
font_01_sfnt_off0000fec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC9 11256 bytes
SHA-256: a80a022470239515cac6a7db5a6dc57e45f9609c956d3831d0482f125551e13e
font_02_sfnt_off00012574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12574 16188 bytes
SHA-256: d869870da8d837a6866777272de7d0a3695169d5af3ece556fffbe6b05726102

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