Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b107c2b4f6bd298…

MALICIOUS

PDF

89.5 KB Created: 2021-09-16 11:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e4757311ce5a204d564a3d09a66bb7a5 SHA-1: a870821c9105e12a62c0d11bf2c1a42edebf8cb4 SHA-256: 5b107c2b4f6bd29830a60cb826f0411a69666590119ab87d3e2ac6821ec355de
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host numerous links on disposable domains, suggesting a phishing or malware distribution scheme. The embedded URL 'https://smidgel.ru/uplcv?utm_term=peter+rabbit+2+watch+full+movie+online' further supports this, as it likely leads to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://smidgel.ru/uplcv?utm_term=peter+rabbit+2+watch+full+movie+online PDF link annotation
    • http://hanaelectric.com/userData/board/file/14149968551.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1613deb207df43---32654231920.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/10677057055.pdfIn PDF document text
    • http://kaies.cn/upfiles/file/limarazafujaz.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/79817434350.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/71926888058.pdfIn PDF document text
    • http://makassitools.com/userfiles/file///90479738126.pdfIn PDF document text
    • http://lightofislamonair.org/uploads/files/49938669909.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613485c251d4c---ligarodizanuponerolob.pdfIn PDF document text
    • http://tw-sincere.com/upfiles/editor/files/7480548547.pdfIn PDF document text
    • http://riversedgefm.com/files/file/61444311724.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/sewafuzotilawoxip.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/gutegowuwuranef.pdfIn PDF document text
    • https://selapro.com.au/application/third_party/ckfinder/userfiles/files/96206129160.pdfIn PDF document text
    • https://exlite.it/ckfinder/userfiles/files/5952575316.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/85870715192.pdfIn PDF document text
    • http://dansungsala.com/uploads/files/15595043677.pdfIn PDF document text
    • https://penzion-pod-rozhlednou.cz/img/file/18059455937.pdfIn PDF document text
    • https://careerroots.net/ckfinder/userfiles/files/nagakibuxubalukapeg.pdfIn PDF document text
    • http://domario.ru/userfiles/file/20309035444.pdfIn PDF document text
    • http://sirmamedia.com/ckfinder/userfiles/files/27354891476.pdfIn PDF document text
    • http://tmacfashion.com/ckfinder/userfiles/files/niledixalulolaxiniganonuv.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/26267159122.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/14823485751.pdfIn PDF document text
    • http://appartementslisa.it/an3_Uploads/file/38801002511.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11145 10948 bytes
SHA-256: 934363691432a0cab044284c7684c95a0ed9f0c501271ba0c4ffcda85371b634
font_02_sfnt_off00012a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A8C 17788 bytes
SHA-256: 99b5a96663c95cb025c1757ebdce5f6782130ea1aa558b2b5461436ee5abc9c0

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