Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95b47c3752f234b…

MALICIOUS

PDF

69.2 KB Created: 2021-10-01 09:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 124029eb9b6d18986f851c3975f17cbb SHA-1: 44fc44a5a5cfde3f7d5de4822fce528d7a47340b SHA-256: f95b47c3752f234b3b84002b1020129182b16420b1537e1425978c566d65d93b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://nomylo.ru/uplcv?utm_term=kumkum+bhagya+march+10+2021 PDF link annotation
    • http://sinoorchids.com/image/file/22672621062.pdfIn PDF document text
    • https://athenaeumchessclub.com/ckfinder/userfiles/files/fazatubixiledilemiripugub.pdfIn PDF document text
    • https://www.ocnistudio.cz/ckfinder/userfiles/files/vunodedusafuwesodifez.pdfIn PDF document text
    • http://asr-net.ru/uploads/files/71738363277.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/72020338060.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/75062058926.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/kazogojukokazowudulabul.pdfIn PDF document text
    • http://vuonlan.vn/data/upload/files/69920025953.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/69406312803.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/nirumabapa.pdfIn PDF document text
    • http://101-games.ru/images/uploads/files/88891805596.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/nobivebexo.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16134c0c3082ad---60510821877.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/13404690239.pdfIn PDF document text
    • http://dzirerealtors.com/uploads/32741236564.pdfIn PDF document text
    • http://novastal.pl/userfiles/file/lufopejunaba.pdfIn PDF document text
    • http://ngocminhcnc.com/demo_thietbimay_24_7/upload/files/nosep.pdfIn PDF document text
    • https://rireenfrance.com/images/upload/files/98372223617.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/9072025502.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/84204796790.pdfIn PDF document text
    • https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/judimakaxera.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/xavikofivolupazibi.pdfIn PDF document text
    • http://tko.wavedev.net/img/files/files/zisexepewira.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_off0000aed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAED0 15732 bytes
SHA-256: 8a4d4c4f3aa5dd71d4a683c42f3e1c05e0fa0e958ce7fe5a8545a4c1076e1f9d
font_01_sfnt_off0000d6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ef02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF02 10648 bytes
SHA-256: 0d423e1b6c69a9324d6b8cc6804623dc97be7d7e40c7f06d23c3a0550d0c67ec

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