Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d49ead63821fb14…

MALICIOUS

PDF

80.6 KB Created: 2021-09-09 16:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 92cec3f283864497bb0e8d3b1825f5e2 SHA-1: 697915530e2a07ce1b2f45289e6ccec8060ffde6 SHA-256: 5d49ead63821fb143d5628ae61116cd227ce9b6a58704c16c0f0436d126f4410
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs pointing to external domains, suggesting it acts as a dropper or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on disposable hosting, reinforcing the malicious intent. No scripts were extracted, but the presence of external links is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://allytemp.ru/uplcv?utm_term=all+call+recording+software PDF link annotation
    • https://zohopin.com/calisma2/files/uploads/52765550896.pdfIn PDF document text
    • http://qlionshousing.ca/userfiles/file/puxipadom.pdfIn PDF document text
    • http://myxroad.net/upload/userfiles/file///jajukunatunumal.pdfIn PDF document text
    • https://martabaktelor.com/contents/files/48281626021.pdfIn PDF document text
    • http://doanekeyes.com/userfiles/docs/rijuxokoje.pdfIn PDF document text
    • http://xn----1-6cdapb2bdyqawnpcindqfc.xn--p1ai/media/file/69981774395.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/fepukujubulatoduxoxeli.pdfIn PDF document text
    • http://amghanoi.com/images/ckeditor/files/kalutenuxosodew.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/xamarajevi.pdfIn PDF document text
    • http://amunt.madteam.net/ckfinder/userfiles/files/85937104333.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/84765016678.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/wigikafinolagugetuxapex.pdfIn PDF document text
    • http://efcosmetic.com/uploadfile/files/xafaniguvumidivij.pdfIn PDF document text
    • http://www.anaja-inter.org/public/file/jixizonen.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/peduxixijibiduxozuneg.pdfIn PDF document text
    • https://hattshopping.com/admin/assets/images/ckfiles/19882685645.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/49996304402.pdfIn PDF document text
    • http://juentai.com/userfiles/files/wevamupirunekivowig.pdfIn PDF document text
    • https://cebubigsellers.com/userfiles/file/49286852566.pdfIn PDF document text
    • http://penetrat.ru/files/files/72769587453.pdfIn PDF document text
    • http://saraya-shop.ru/upload/files/kudexulegadi.pdfIn PDF document text
    • http://www.smartlandgroup.com/ckfinder/userfiles/files/97102289779.pdfIn PDF document text
    • http://purofirstli.net/userfiles/file/vutil.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/toridoxukuwetis.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_off0000d8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF102 16804 bytes
SHA-256: 4740918db9a774519a5ff72db8811c02d651af8f6efa3ff02348c36a562ac369
font_02_sfnt_off00011cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD2 10716 bytes
SHA-256: e3b2b8a6f866893a37ddef563cf92640ca57b02e88763db02ce65e1be6b954fa

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