Malicious PDF — malware analysis report

Static analysis result for SHA-256 4daeaf8ad74c0419…

MALICIOUS

PDF

75.0 KB Created: 2021-02-01 17:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: fbe1653d6f6cdc7af9bef19badf3550d SHA-1: b00393c41e584a7486fcf600a09436756f872cd6 SHA-256: 4daeaf8ad74c0419bac061fc59723eed5956b0b629e5048591d13070b9a438f0
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate the document is designed to redirect users to various external sites, likely for malicious purposes such as credential harvesting or malware distribution.

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://bologen.ru/123?utm_term=the+junkyard+wonders+lesson+plans PDF link annotation
    • http://yudekor.ru/samoridagotekitusaznes.pdfIn PDF document text
    • http://accface.in/gugavapuxuvj4iiz.pdfIn PDF document text
    • http://verification-help.com/nakemetekamadudowinir411c7.pdfIn PDF document text
    • https://nebofubegifeso.weebly.com/uploads/1/3/1/4/131437549/punudaga_vokoxirozop_mubomuzokekid_zijegi.pdfIn PDF document text
    • http://comp-arenda.site/norcold_rv_refrigerator_user_manualdlb5c.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/xujujokefadiwedok.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/xevetudizamoni-xizujevaxumak.pdfIn PDF document text
    • http://nasty666.space/fluent_forever_chinesejv0vc.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/nisiwanolom/blade_runner_3d_model_free.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/robert_schumann_traumerei_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/vasopressor_extravasation_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/jokaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/30044894983.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/chaebol_reform_activist.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/kumenowobomewemute.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_off0000ead7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD7 5328 bytes
SHA-256: 3b13f685eb4b48631ebb4b3ecc4e8a33fed8e994dffd763b2c3db007be61614f
font_01_sfnt_off0000fd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD09 9908 bytes
SHA-256: 0cb61f3cc0403a6dfd01ffc47713c30d67668bf492f70900461a4ecc1cbb3ca5

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