Malicious PDF — malware analysis report

Static analysis result for SHA-256 496030eabe9fa159…

MALICIOUS

PDF

132.4 KB Created: 2021-04-03 22:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: db64ef3b584aa9540dc28f309e6281de SHA-1: 9fad6e2af7c7d765330afcb8a5f3ea2d0479c4a6 SHA-256: 496030eabe9fa159a1aac70b3e94662e066371b7ac1fe54253443fb31342c946
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 0.9998

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://dafemum.ru/strik?utm_term=nursing+exam+questions+and+answers+pdf+in+hindi PDF link annotation
    • http://depusapo.mypressonline.com/87316830305.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/94646894141.pdfIn PDF document text
    • http://wumupowon.22web.org/analytical_and_computer_methods_in_foundation_engineering.pdfIn PDF document text
    • http://ostanni.fun/what_is_arbys_traditional_gyro_meatcgblx.pdfIn PDF document text
    • http://dududuw.mypressonline.com/cultivo_de_bacterias_en_agar.pdfIn PDF document text
    • http://tomandbxof.site/46687489254wdnpu.pdfIn PDF document text
    • http://uablog.website/nfl_fantasy_football_ppr_draft_strategyc4cwl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22ddf08-a816-4f88-8aa6-8d453e7681aa/feregisokunuxisufadofaron.pdfIn PDF document text
    • http://kovovurimona.epizy.com/contabilidad_administrativa_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7575b4b-8219-41dd-a956-f5cce7d163cd/35641066271.pdfIn PDF document text
    • http://bofekid.epizy.com/tuvunizezituxilaz.pdfIn PDF document text
    • http://tulinavosubod.rf.gd/89992132816.pdfIn PDF document text
    • http://tasukifuputuf.epizy.com/tevefisaxatuloturegud.pdfIn PDF document text
    • http://wifotomosif.epizy.com/sedevegajajegojizaki.pdfIn PDF document text
    • http://vopapatadape.epizy.com/funniest_kid_test_answers_infinite_lists.pdfIn PDF document text
    • http://wubonaxe.epizy.com/graphing_calculator_ti-_84_free.pdfIn PDF document text
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_29042833c27248519147e80a295e24b8.pdf?index=trueIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_45edcba5f19649a8a4b6e7ca9a8d0271.pdf?index=trueIn PDF document text
    • https://083189c9-8220-4687-a375-57be19a37228.filesusr.com/ugd/909b15_1ecf6e70f2a342688cdeab8e23c1ae50.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/102c082d-93a5-4edf-9fd9-9df35c0582f0/how_to_roast_a_turkey_with_a_convection_oven.pdfIn PDF document text
    • http://mevumum.epizy.com/nirit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C7CD 5680 bytes
SHA-256: 401f21c85297b62866fa340ce436088fe66aec96eddc9233225e011060a5ae91
font_01_sfnt_off0001db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB0C 12176 bytes
SHA-256: 4329c74e685f44ca5f15a5be71e5fd4714e0b5a1cca1ae37f03311b44f396839

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