Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49280bd9052efbf…

MALICIOUS

PDF

69.1 KB Created: 2021-04-07 22:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7bf4334ce33c936decb402be93c298bc SHA-1: 3a906b27f72d9e1890f08fbc1924cddfdb008933 SHA-256: f49280bd9052efbfce5536ad8dce2012ed65d43fd61614a29717f32c8e3b25c0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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://ponafet.ru/strik?utm_term=in+the+time+of+the+butterflies+movie+free+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469375/normal_5feb5c1bcec89.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/45578132691.pdfIn PDF document text
    • http://zosuwalerikare.getenjoyment.net/anlise_de_contedo_laurence_bardin_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453908/normal_5fcdb876b00e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482848/normal_6037aae1c3ab7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/ridolizemukuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/formaggio_canestrato_di_castel_del_monte.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/gewejudunifediludimap.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/data_analysis_with_python_coursera_github_week_6.pdfIn PDF document text
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_64746aaa68e7469c8f3f3e7cbe0cfa1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/79134834664.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/how_to_use_a_fagor_duo_pressure_cooker.pdfIn PDF document text
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_4a2063e8952a4a4888fec31b8cae01ad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawovojo/17418172251.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/map_of_canada_blank_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/aaron_smith_dancin_free.pdfIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_a6fe355c53744f1e8ae066399bbf56ee.pdf?index=trueIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_34f288701eaa4af7bec06a46b1c7bdab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovitiku/archero_mod_apk_1._0._3.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/brother_mfc_7360n_reset_toner_message.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_off0000d1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D8 4936 bytes
SHA-256: 6f5c3a896d3b35f8baf35da01928972c2941a87fb8986cd9d33dc4f16cf24683
font_01_sfnt_off0000e27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27D 10840 bytes
SHA-256: 95618cd594d01610eaf2c364ccc7e026361a5a83f2425bba736753f929cf9b76

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