Malicious PDF — malware analysis report

Static analysis result for SHA-256 30adbc4b969d3233…

MALICIOUS

PDF

71.3 KB Created: 2021-03-28 00:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 28e354fb4336d6b474fc901bdcc8ec7f SHA-1: 55772c035f65447fc0fcd10555340c678bf46009 SHA-256: 30adbc4b969d323358426621c20b6b54332042dd67b777a76f6a907efb8edc5b
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 0.9997

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://pelibifir.ru/wix?keyword=us+history+benchmark+test+1+answers PDF link annotation
    • http://mavaxur.mywebcommunity.org/basic_electronics_engineering_lecture_notes.pdfIn PDF document text
    • http://megaliwuxo.22web.org/how_to_write_an_outline_with_a_thesis_statement.pdfIn PDF document text
    • http://lugabev.mygamesonline.org/32437084699.pdfIn PDF document text
    • https://fejavuwuvumago.weebly.com/uploads/1/3/0/8/130874007/pezoxugiwokozalu.pdfIn PDF document text
    • https://vumiwexazowonig.weebly.com/uploads/1/3/4/6/134680765/37565e6ea.pdfIn PDF document text
    • http://warewakeb.sportsontheweb.net/karukodaliluje.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
    • http://lojuwuwa.rf.gd/53422903276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d62416-7674-49e3-9da8-1e95652b5735/things_come_in_threes_quotes.pdfIn PDF document text
    • http://lenegimuni.epizy.com/45939368124.pdfIn PDF document text
    • http://laxigazejegoxe.epizy.com/o_candomble_da_bahia_roger_bastide.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/audi_a4_2010_repair_manual.pdfIn PDF document text
    • http://jegajumofi.rf.gd/runa_vimochana_angaraka_stotram_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e42e7eaf-3ed0-4e8b-a7ff-ae0cbaf3a497/cuanto_es_un_metro_cuadrado_en_milimetros.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/grid_css_template_areas.pdfIn PDF document text
    • http://zofududa.rf.gd/bye_gif_free.pdfIn PDF document text
    • http://wenares.myartsonline.com/every_living_thing_by_cynthia_rylant_slower_than_the_rest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a51c70-59af-4214-a8b3-453ed16addc9/dopoz.pdfIn PDF document text
    • http://zegegapo.rf.gd/pirates_of_the_caribbean_theme_song_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/lixudapisalukugaf.pdfIn PDF document text
    • http://nibizuladode.onlinewebshop.net/posicion_antalgica.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_off0000ceef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEF 5236 bytes
SHA-256: f7b953df8aceccaa5342ef25f37a05677b83785acb2cb45bf8247aca3487a603
font_01_sfnt_off0000e0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A0 9692 bytes
SHA-256: 45a2811f49a2f988857ec3f3334369dbef0ba96fd91df4d8fba93221a04cfe1a
font_02_sfnt_off000101cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CF 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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