Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2782dbe16ee1323…

MALICIOUS

PDF

88.5 KB Created: 2021-03-15 02:05:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b84e3058decaa2c2824787dfbba57d7e SHA-1: 1cf40bf0177034eeda6f7b871750b305b86ac280 SHA-256: c2782dbe16ee1323c1b4644e8307398bfd5fa51afbad6bdf76106f7127b6f558
134 Risk Score

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/wix?keyword=eric+cressey+show+and+go+pdf PDF link annotation
    • http://wogivodugakovek.mygamesonline.org/mosem.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/author_of_whos_afraid_of_virginia_woolf_crossword_clue.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/microsoft_sculpt_comfort_desktop_setup.pdfIn PDF document text
    • https://vekowafonomi.weebly.com/uploads/1/3/4/6/134692424/lagetijojezowij.pdfIn PDF document text
    • http://eu-study.ru/zubapasijazsdwrz.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/poxakovodad-visabajoxirodu.pdfIn PDF document text
    • http://senteber.site/hansel_and_gretel_story_downloadq1jwh.pdfIn PDF document text
    • http://wodaretibinusad.22web.org/vocabulaire_anglais_franais_arabe.pdfIn PDF document text
    • http://itravelimpressions.com/lozikifeludoxirqnvo.pdfIn PDF document text
    • http://berabujadew.22web.org/6872452568.pdfIn PDF document text
    • https://zomuguwiremadak.weebly.com/uploads/1/3/1/4/131406071/2339b8fd1746.pdfIn PDF document text
    • http://nudistoff.club/descargar_gratis_biblia_reina_valera_1960_para_pc_windows_7icrrl.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://kagiwabiluwotel.epizy.com/canada_post_machineable_mail_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/tamil_news_hunt_software_free.pdfIn PDF document text
    • http://wafeginake.rf.gd/wejilagititakaxejalasoj.pdfIn PDF document text
    • http://sigafuveno.epizy.com/canon_eos_80d_instruction_manual.pdfIn PDF document text
    • http://luxupovokajaf.onlinewebshop.net/craftsman_garage_door_manual_release.pdfIn PDF document text
    • http://pivirujifija.epizy.com/setup_belkin_n150_as_access_point.pdfIn PDF document text
    • http://setiwol.epizy.com/free_templates_for_hotel_management_system.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/lake_havasu_city_az_restaurant_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/passport_renewal_form_south_africa.pdfIn PDF document text
    • http://miwofalixi.rf.gd/88381844656.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_off00010e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 5244 bytes
SHA-256: 67582b830537d4a706ae24e7b87f47635d87353142456a74123ec7b385d3671a
font_01_sfnt_off00011fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FED 11280 bytes
SHA-256: e617570a6b1a9cabf3646a2162ac5469053196ffe467a250c9a4314abd13c0c3
font_02_sfnt_off0001464d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1464D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c