Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8beb8b0cdb368c…

MALICIOUS

PDF

87.6 KB Created: 2021-04-05 14:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 58263a847d680c4f9087f3be4eb53c6d SHA-1: 18d0ffdc75dce16f8ce21be7a6f16364c2877cdc SHA-256: 1e8beb8b0cdb368c2812d353615dae506a133399d84c623175d3462e7f2d6fab
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=online+urdu+poetry+books+pdf PDF link annotation
    • http://naturapple.space/zidaw0ub16.pdfIn PDF document text
    • http://fashion-deals.xyz/74213723546hsj8a.pdfIn PDF document text
    • http://wiregabjuk.fun/45963200630h7hf3.pdfIn PDF document text
    • http://suxewesawu.22web.org/database_case_study_examples_with_solutions.pdfIn PDF document text
    • http://varietystore.website/973321043672b5c.pdfIn PDF document text
    • http://sparzha.club/47680747438bwodv.pdfIn PDF document text
    • http://tokigarodam.22web.org/37508353425.pdfIn PDF document text
    • http://wegansit.space/87162033841a3ffr.pdfIn PDF document text
    • http://all-system7.work/mupajapumegibubifogenawoc0jlf.pdfIn PDF document text
    • http://sosiwuro.iblogger.org/august_2020_current_affairs_free_download.pdfIn PDF document text
    • http://negozio50sconto.info/tumijazokosulle2g.pdfIn PDF document text
    • http://sikepelisu.22web.org/memosobon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gidibesuxi/lufisufura.pdfIn PDF document text
    • http://guminol.epizy.com/learn_python_the_hard_way_python_3_free_download.pdfIn PDF document text
    • http://tafisom.epizy.com/gagazevivikogebedi.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/wood_laminate_sheets_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/nesozufijubigewozowij.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/84845598476.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/tisogemozuzepobi.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/93141619096.pdfIn PDF document text
    • http://wobirazegezuw.epizy.com/1184102401.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/does_american_assassin_have_a_sequel.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/savobenakoxabijufowegora.pdfIn PDF document text
    • http://duzujijola.epizy.com/pamurojajas.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/kogoze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B5 5040 bytes
SHA-256: d8145c2c09cc25ac0c46afeaf4d4270030ee45a1503db97e3c7ac12b2a42c631
font_01_sfnt_off000119e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E9 12344 bytes
SHA-256: 9debbb24746ab64607d1faba63148fbc15239dcc797bcaa2dda9af048fa83ceb
font_02_sfnt_off0001429b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1429B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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