Malicious PDF — malware analysis report

Static analysis result for SHA-256 9438818d744dd6e6…

MALICIOUS

PDF

70.1 KB Created: 2021-04-05 08:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7e0493e689b0f6e054abe26652692cb0 SHA-1: 3f5f91fcf3ee5d79ef2e0f4c9fad159efdd1eb2e SHA-256: 9438818d744dd6e697437b9114b4578fbe16688451bcb7c3e155ed1ebba11ceb
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 0.9991

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://bologen.ru/award?keyword=contrarian+trading+pdf PDF link annotation
    • https://vigobekopu.weebly.com/uploads/1/3/2/3/132302998/fe441d.pdfIn PDF document text
    • http://wunuwivibegajim.22web.org/litinoxozupamapa.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/mosesuvuginizive.pdfIn PDF document text
    • https://suzokapiwewop.weebly.com/uploads/1/3/4/3/134351383/f151d4b22de6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402706/normal_604c995c5a008.pdfIn PDF document text
    • http://pisumuvate.sportsontheweb.net/principle_of_agronomy_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_60537d55a70a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408463/normal_5fe842e1dad2e.pdfIn PDF document text
    • http://ripozeda.iblogger.org/konica_minolta_bizhub_c224e_driver_download_windows_7.pdfIn PDF document text
    • http://procripton.com/35730122326u4cdm.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/94787891166.pdfIn PDF document text
    • http://biomaniks.website/anime_studio_story_lite_mod_apk4egek.pdfIn PDF document text
    • http://hookup671.site/givexosugagetalago6fera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451555/normal_60412f05753a8.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/64093938435.pdfIn PDF document text
    • http://mofirixubutibi.getenjoyment.net/vuvemexilemunijedik.pdfIn PDF document text
    • https://wajigigo.weebly.com/uploads/1/3/4/5/134588105/nolazejonavefu_zepodova.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/modern_periodic_table_image.pdfIn PDF document text
    • http://amin-ukraine.net/785934859767f98l.pdfIn PDF document text
    • https://zivodigogugev.weebly.com/uploads/1/3/4/6/134664532/23de78e193b2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuzexoba.rf.gd/5421665595.pdfIn PDF document text
    • http://fadezanunadafik.myartsonline.com/vujanidipiwegijubizudebav.pdfIn PDF document text
    • http://sijadogif.atwebpages.com/las_28_creencias_adventistas_para_nios.pdfIn PDF document text
    • http://vixadonudoma.rf.gd/surufopewuwerexap.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_off0000d73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73E 4904 bytes
SHA-256: 12e69666008b5c4bd53a5c7896f64c63c91ebc10772d9a78bd5963bfc5b17005
font_01_sfnt_off0000e7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FF 10324 bytes
SHA-256: ac53532d48d53fc75ec27dacf706857da73dca248227ad0943ba075eab1521ca

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