Malicious PDF — malware analysis report

Static analysis result for SHA-256 1185f9ef92935e8a…

MALICIOUS

PDF

93.9 KB Created: 2021-03-21 12:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 40335b2dcb82fe25799c57b8dd3cd82f SHA-1: a729100d869d010a3871a14c0d86ece112e7222c SHA-256: 1185f9ef92935e8a7ac077f386da206c268b9e108f894ed2a7211fd70f4c1574
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to S3 buckets and Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful content or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/award?keyword=ap+literature+multiple+choice+pdf PDF link annotation
    • http://mattelipsticks.site/39965826941t82cc.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/131b9c25bc3ac.pdfIn PDF document text
    • https://sesanejaw.weebly.com/uploads/1/3/1/4/131407178/4b2b5771d3c39.pdfIn PDF document text
    • https://nijegowililuxis.weebly.com/uploads/1/3/0/7/130739340/sibib.pdfIn PDF document text
    • http://naturaleone.space/51411149256jmllh.pdfIn PDF document text
    • http://com-signto5.xyz/39759915801l2xno.pdfIn PDF document text
    • http://maximizator.online/free_4k_wallpaper_for_iphone_11jgonw.pdfIn PDF document text
    • https://tanibabinilez.weebly.com/uploads/1/3/4/0/134018029/jetatirilaxoko.pdfIn PDF document text
    • https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/e46b0512.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/wivunonovef/cranium_whoonu_rules_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79442d2a-dc84-4632-b35a-1ce6c4085f8a/perezig.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/76470315065.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/copy_excel_sheet_python_openpyxl.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/afraid_of_monsters_director_s_cut_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/vawomizam.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/vba_change_date_format_yyyymmdd.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/netflix_app_for_older_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/fuwovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60497af4-b558-48dc-ad20-2db042a57d30/13676663970.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/bimorowaladofol.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/56429482167.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/58648190559.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/vivinas.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/fokoxulivorotube.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_off000132a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132A0 5204 bytes
SHA-256: 998be2c8d47374301f2a0cbf28c9d0371311a90e597ce2f4a572b4c53e4b0b32
font_01_sfnt_off00014429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14429 11092 bytes
SHA-256: 42ea4f308d49d60ff3daa4d28e6ca394328580cf2bd624f07b73f0e7fe403340

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