Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94e7bc46f233b28…

MALICIOUS

PDF

99.1 KB Created: 2021-04-05 02:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6476f537056a78f072e9e62ae0482cbc SHA-1: 5b10ae4f552b8e332d4e60ffb39675ecd7faa5a0 SHA-256: c94e7bc46f233b283e8242294b65c5ee5a6c58acb4f7475b6ed0641af543b16f
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 0.9995

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://dugedepap.ru/award?keyword=aushadhi+vanaspati+information+in+marathi+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450038/normal_5fd5f823e8723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_601a17cdcf796.pdfIn PDF document text
    • http://shishkin-seed.xyz/el_hombre_multiorgsmico_audiolibroaaygv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453720/normal_5fd789001085a.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/per_la_gloria_d_adorarvi_low_voice.pdfIn PDF document text
    • http://apkweb.net/an_ember_in_the_ashes_book_4_release_datekrilf.pdfIn PDF document text
    • http://tebeririz.scienceontheweb.net/10245737247.pdfIn PDF document text
    • http://megalit-korolev.ru/45655798009esitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_600fa0d2a8434.pdfIn PDF document text
    • http://igbusinessabouthelp.com/sql_server_clustered_index_insert_performancelrgm8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446647/normal_60521576e5d6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486201/normal_605c38f29c672.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413119/normal_60030cd202c0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/b86ffaf6-e47d-47ec-9779-1ea3fc3bfa74/xiledazaxero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eecd500-e230-4f6e-8c33-dc9d2d0c3ad2/1705064878.pdfIn PDF document text
    • http://suredutika.rf.gd/what_is_april_20_1992_zodiac_sign.pdfIn PDF document text
    • http://febegisavim.rf.gd/jozome.pdfIn PDF document text
    • http://zubikezisupudo.rf.gd/mesutoremel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa26999-ff05-41e3-8659-1dc71a0c07e1/how_to_answer_how_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c7dc61a-702b-43f8-aaac-da17a3dafacb/65867547297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd767064-a532-4308-acfd-c0d5ab916bd2/ferrari_360_for_sale_near_me.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB2 5296 bytes
SHA-256: 1c15076d9aa252b137ea4a29119c4ee7c60e746beb385a590801a721bd61a83e
font_01_sfnt_off00011e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E99 10256 bytes
SHA-256: 3c7a9ddef021def3c436399af26f1cc93528f66dff8e7c38a7caab40a41df95d
font_02_sfnt_off0001418a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1418A 20160 bytes
SHA-256: c2517a60cd7526c9bcc3bc3f1c946112e0e8e083f542d59107d0e6100430c91d

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