Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee6e98fcb67e980…

MALICIOUS

PDF

73.9 KB Created: 2021-02-26 17:04:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6a6f5ded65a8ef97fda8d0c5d7a3dba0 SHA-1: aa77016869d3a819b6aee8a1a156c635c9475c23 SHA-256: 9ee6e98fcb67e980e042bdc52bbea6d8103281947901b6b2777ec81dff6affd5
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of 'radiance sutras pdf' and 'types_of_aircraft.pdf' in URLs indicates a potential pretext for directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mezovuduw.ru/wix?keyword=radiance+sutras+pdf PDF link annotation
    • https://gelasinez.weebly.com/uploads/1/3/4/7/134763890/400295.pdfIn PDF document text
    • https://zamidagotef.weebly.com/uploads/1/3/1/4/131453459/lavebopejoje.pdfIn PDF document text
    • http://pawaridifos.iblogger.org/types_of_aircraft.pdfIn PDF document text
    • http://lemixebu.22web.org/dunarozizimujijawuwezam.pdfIn PDF document text
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/lupumitebij.pdfIn PDF document text
    • http://vusejulene.iblogger.org/word_label_template_4_per_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/hgmsGif/94983702172.pdfIn PDF document text
    • http://serviceforyou.site/73208054538aym0e.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/xaliwalufoguni/xobebaxiluwabowokibapa.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/cursive_handwriting_improvement_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/visalozibepesoxinajabol.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/postgres_explain_analyze_format_json.pdfIn PDF document text
    • http://ritarejameja.epizy.com/guzeroduw.pdfIn PDF document text
    • http://xotesevuves.epizy.com/wonderwall_chords_guitar.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_off0000dbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD8 5124 bytes
SHA-256: a72d23f720ecbac42bb4247860270fe436558153173652fd164b49f274b85be4
font_01_sfnt_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 1772 bytes
SHA-256: 7450840a3756fa94222fe786a886c33c9f38c180ecd9b5bf65d3d816b37869b6
font_02_sfnt_off0000f5cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CF 10908 bytes
SHA-256: e4dcf7f8ddd1e3251384766a1f35bc58ab55910bbfce0e7c43bc42caebe121d8

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