Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4efafcd84ee20d9…

MALICIOUS

PDF

62.3 KB Created: 2021-03-31 22:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 11d8368e80c0d934266b3e107ed86129 SHA-1: 187fb6de60ca71f106b3d98e0df92571fd547895 SHA-256: c4efafcd84ee20d93887b7fafd07373f495e3b1ed76188a9bc477a8ec393e587
154 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 spam or directing users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one pointing to 'https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/943675.pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9398

Heuristics 4

  • 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
  • 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://seumenha.ru/award?keyword=mso+001+sociological+theories+and+concepts+pdf PDF link annotation
    • https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/943675.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/83422705810.pdfIn PDF document text
    • https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/mowivage-kolibax.pdfIn PDF document text
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/savexemedamafatajuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_5fda3a53e245a.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/93098837865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393889/normal_5ffc3723a1038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_604de359f0a48.pdfIn PDF document text
    • http://woronari.getenjoyment.net/acuerdos_de_basilea_1_2_y_3.pdfIn PDF document text
    • http://jisuvakuwiraza.medianewsonline.com/concepto_de_trastorno_alimenticio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://29bb9f0a-cb36-4278-8b1c-05d86a2267e4.filesusr.com/ugd/25e746_b08dee1fac144b7a9a3a1cb9bd5a496d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xefejevife/bazimoreninonomu.pdfIn PDF document text
    • https://29fa80ab-3b21-46a5-a5c9-66d7a3d84e9c.filesusr.com/ugd/eb9fb8_7bd92f182c584fc88ac78f5dbd8bb423.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/41828854790.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/annals_of_oncology_submission_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/ledizozadebabo.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/focusrite_scarlett_solo_driver_windows.pdfIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_ca2419180bcd4632b92fe4e76a7e3e09.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juvetaso/best_travel_guide_to_andalucia.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/apple_preview_add_text_to.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/14564343278.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/panchatantra_kannada_movie_audio_song_free.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47F 5616 bytes
SHA-256: f7154432d0d36878d5a13a69a99c17d64773822ff9e6a4938803a343a242aeb8

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