Malicious PDF — malware analysis report

Static analysis result for SHA-256 216a7e8d67df19e3…

MALICIOUS

PDF

91.4 KB Created: 2021-03-25 13:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0017b5484cbf5a8fc6cb078628a208b3 SHA-1: 9d6887fbdf6b9f4dd15555f1bfe5148601c16e87 SHA-256: 216a7e8d67df19e3e6154f245edb0731226bda55e8ae8b0d2810d44986757e14
66 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristic firings indicating it is a link farm hosted on disposable domains, designed to redirect users to potentially malicious content. The ML classifier strongly flagged this PDF as malicious. The primary lure appears to be a "New testament seminary teacher manual pdf" to entice clicks to the suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • 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://botokaw.ru/wix?keyword=new+testament+seminary+teacher+manual+pdf PDF link annotation
    • http://tipofeliluget.medianewsonline.com/monobuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/doparibi/bggicfd/cbse_class_8_maths_book.pdfIn PDF document text
    • http://pelososone.22web.org/70087947877.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/mesukodomugudivuxokovi.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/fgd3chh/polaroid_originals_onestep_2_viewfinder_i-_type_camera.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/2tji0gh/juwozupivopesazom.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/34304741326.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/vria0ja/sniper_rifle_nerf_guns_for_sale.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://uploads.strikinglycdn.com/files/59e96a1a-ba7b-46da-9038-d9743170bc94/zupafobozifojefogubitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2ee05c-6e49-4319-89cd-7562239cae02/77311762059.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/42483767815.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/korean_language_learning_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18342797-3732-4d0c-afd1-28853882bb8f/63562469041.pdfIn PDF document text
    • http://jovesiresumu.rf.gd/how_to_reset_ipega_red_knight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dcc8acb-3cac-42b2-84db-075c6527830a/lifiz.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/futufiwukiletopotasoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae6c79c3-fefb-44b0-9e28-cdcc6302a8c0/watch_war_of_the_worlds_2020_free.pdfIn PDF document text
    • http://mukonedes.epizy.com/java_8_features_interview_questions_javatpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/31760491408.pdfIn PDF document text
    • http://semowomeso.onlinewebshop.net/zebumilasezoduwo.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/megumego.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/4995835978.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/ferrari_458_for_sale_ebay.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_off00011a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A80 5332 bytes
SHA-256: 308a6c6bbcdc0811e3388f3b918b6b9e9301b2d0c6a37ad1a32cb8e72b283df3
font_01_sfnt_off00012c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C85 10932 bytes
SHA-256: aea67db37544732a8d855e0be5cca5f9a553eef79dad4784d2308e6dc161c066
font_02_sfnt_off000151c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151C2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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