Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c5fc87f0cae2e2…

MALICIOUS

PDF

81.8 KB Created: 2021-03-20 08:21:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ef2fbba22cf56e6497b0fcfdd8794f7d SHA-1: a7e7063fd3a6138667a647e6ee05e3e9df376ed7 SHA-256: d4c5fc87f0cae2e2703d7d8036820cea55df86c536fcc7463e6dffb2950275d2
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning or redirecting users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, suggesting an attempt to manipulate search engine results or distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/wix?keyword=how+to+change+profile+picture+on+houseparty+chrome PDF link annotation
    • http://zelenege.iblogger.org/jixiduforizufodutino.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/98986220190.pdfIn PDF document text
    • http://lerimofo.mywebcommunity.org/fefuj.pdfIn PDF document text
    • http://lipazegeboludep.sportsontheweb.net/65275498561.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/82427326076.pdfIn PDF document text
    • http://lazokiwumemo.mygamesonline.org/the_great_derangement_amitav_ghosh_free_download.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://fakozavovenabe.rf.gd/bada_pachtaoge_whatsapp_status_wapwon.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/what_does_black_and_white_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/avg_pc_tuneup_paid_version.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/pololu_a4988_datasheet.pdfIn PDF document text
    • https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_456a7ae0a4e24a54a1baf0cd5f65b137.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewiro/57789910539.pdfIn PDF document text
    • https://506dbbd1-d4b3-44b1-a4c9-6b5d0cab6a23.filesusr.com/ugd/c75f60_e7acb108c1264b6b8dd885ff3946bc0a.pdf?index=trueIn PDF document text
    • http://fukesok.rf.gd/translations_in_coordinate_plane_worksheet.pdfIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_5eeb002180e94a97a5c1c49fd07203bd.pdf?index=trueIn PDF document text
    • http://leparitupoxow.onlinewebshop.net/44846232095.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/connect_4_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/judoladimimimifodazuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/barcode_font_for_sap_crystal_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/adjective_clause_worksheet_for_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/sugevokuwusunejewamiso.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/lagu_alyah_jutaan_purnama.pdfIn PDF document text
    • http://biranon.rf.gd/26620597005.pdfIn PDF document text
    • https://200ee3fc-349d-4871-b5c3-2c1c69b60476.filesusr.com/ugd/7b00a0_6144dbdec1d04afca19496487e80995c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zizene/15356290033.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_dcd4aef018a04e7ab3d2d8d16d33f0c9.pdf?index=trueIn 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_off0000f08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08D 5464 bytes
SHA-256: 02d5733a4d6f10da99a12f8a91979c0063794959e0fdc6cb73fe3387d9d1c78a
font_01_sfnt_off0001030f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030F 11000 bytes
SHA-256: 9ba15e90462f7185dc505663a8bf742bc1d2b343fc3f12683a4258c5bdccc194
font_02_sfnt_off0001288e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1288E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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