Malicious PDF — malware analysis report

Static analysis result for SHA-256 854d080e41eb6350…

MALICIOUS

PDF

73.1 KB Created: 2021-03-14 18:00:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 156c66962d3feed81286c88e26e6f052 SHA-1: 67fd1546bff6a8e85d9bc292cd63e5f8d7ea1801 SHA-256: 854d080e41eb6350dab2f25f25aa7fea4deff6e38cdf5624328c134335e09863
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/wix?keyword=the+binding+of+isaac+rebirth+ps4+controls In PDF document text
    • http://tumuduwaju.mypressonline.com/malokulekigumitirunina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491670/normal_6030e6f562465.pdfIn PDF document text
    • http://peteferix.mypressonline.com/piwifuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492246/normal_5fd5f069207ec.pdfIn PDF document text
    • http://lozejokewoj.22web.org/setup_asus_dsl-ac68u_as_repeater.pdfIn PDF document text
    • http://sovuradema.medianewsonline.com/how_long_do_snow_blowers_last.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388626/normal_5fe0cff83415a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_b9e52fefd5e1401788be905b007a19de.pdf?index=trueIn PDF document text
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_809a0c7e7457406293cd3eefae7f1f1e.pdf?index=trueIn PDF document text
    • http://kinanugix.rf.gd/bamakiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/74901124394.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/55986254475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfbc094b-ed48-457f-bc5c-2ea92ec89ad1/dekape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbcae0f9-27c6-45cb-859e-a8ff181791f8/wowetigurenajibidef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35094a0d-2da9-4ae6-a13d-cb61c029273a/symbolism_in_literature_worksheets_for_middle_school.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_2604bef02a084b24a2e42e8194403b62.pdf?index=trueIn PDF document text
    • http://pomisatavep.rf.gd/risilek.pdfIn PDF document text
    • http://deriwamunul.rf.gd/solexizajorixezof.pdfIn PDF document text
    • http://rurasikawasup.epizy.com/davotaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04092bcd-c567-4ba5-93a1-5fd33df27dcc/bewulalagan.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/80682884569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b39913-835f-45ae-bfa1-2e656cb92b82/10611192604.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_off0000de5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 5596 bytes
SHA-256: b46da85a1a9dd212f7c5e344164dc0c8f6b1626641f6dae60bb036adb3c6517f
font_01_sfnt_off0000f164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 10920 bytes
SHA-256: 206c5bce66586f2e085629a6964a604e30d87e34fc7ca8ef232263d48a4178cf

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