Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f01a3b66ed4175e…

MALICIOUS

PDF

78.1 KB Created: 2021-02-18 02:34:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6e9fe312c21c27bd5655b86e798f4ff2 SHA-1: 028404cbb1115f8188cba6776855c02ef20cd70b SHA-256: 1f01a3b66ed4175ece7c727cc315638de7b056ebbf69f91ad5ccb8169a00c379
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a lure related to a search query. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further suggests a phishing or scamming operation, likely involving redirection to malicious sites.

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 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://jacksth.ru/strik?utm_term=is+gdp+and+national+income+same PDF link annotation
    • https://cdn.sqhk.co/lewuravasu/4Fk3jbM/prepaid_promos_du.pdfIn PDF document text
    • https://vujewixijul.weebly.com/uploads/1/3/1/4/131437312/lagode.pdfIn PDF document text
    • http://remontnatali.ru/www_bogglesworldesl_com_2006_skeletal_system_crossword_answersto22t.pdfIn PDF document text
    • http://ridunculus.com/39611552194n7jud.pdfIn PDF document text
    • http://polnews.xyz/ejercicios_de_trigonometria_1_bachillerato_resueltosqayjz.pdfIn PDF document text
    • http://upsbox.ru/voteli7ytk0.pdfIn PDF document text
    • https://cdn.sqhk.co/zivupowixede/hhJttgh/games_like_criminal_case_on_facebook.pdfIn PDF document text
    • http://natur-green.fun/58896666574hkmq3.pdfIn PDF document text
    • http://lnstagramsupportlives.com/356827473981hfs5.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/3583042172mjios.pdfIn PDF document text
    • http://egosikenclub.com/69121541991nmfnt.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/rebomedug/free_cursive_handwriting_worksheets_for_third_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/share_chat_app_jio_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/perezivivubipijusadet.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_off0000e84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84D 5236 bytes
SHA-256: 238d9635d146cd003bb57bb23e864e6ac29564ec842128518fb4454f3f9b2675
font_01_sfnt_off0000fa0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0E 15848 bytes
SHA-256: d6825c374b9d6fdc7ec68e5b787a59980b2efd69ca8002365fba82be36d58b07

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