Malicious PDF — malware analysis report

Static analysis result for SHA-256 880f3921a3376869…

MALICIOUS

PDF

85.7 KB Created: 2021-09-14 08:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4042e09e83a697dd41586a1efebfc2a8 SHA-1: 77d25a86a8c679de2128c8c78455b36a1edf6f03 SHA-256: 880f3921a3376869a80d6cf57a82180966cb3f73f69dcd5f2d36ce38d4c88533
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://pixomot.ru/uplcv?utm_term=el+zohar+en+espa%C3%B1ol+pdf+gratis PDF link annotation
    • http://murzilka.biz/images/uploads/file/nunelitaf.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/xupazogadegevelufo.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dapakifokativuxop.pdfIn PDF document text
    • https://zmiz.hr/userfiles/file/jadamepi.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/lidedemunet.pdfIn PDF document text
    • http://pbhdom.eu/userfiles/file/lenuva.pdfIn PDF document text
    • https://gilbertems.com/videos/file/faratulokafagobadewoweju.pdfIn PDF document text
    • https://conrays.ru/f/data/24824703631.pdfIn PDF document text
    • http://lagrupacio.cat/file/4709259144.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/98737813196.pdfIn PDF document text
    • http://www.grifin.sk/files/71245642335.pdfIn PDF document text
    • https://sagarexpress.com/userfiles/file/40773055002.pdfIn PDF document text
    • http://dungcumaymoc.com/Images_upload/files/96131129412.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/teposanafevubedumixedato.pdfIn PDF document text
    • https://hfbee.tw/upload/ckfinder_temp/files/20210903124917.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/pizuneveteme.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/zidudasopojukofakefo.pdfIn PDF document text
    • http://yuli-china.ru/d/files/siderawubututes.pdfIn PDF document text
    • https://t2sc.me/userfiles/zerutoturunebul.pdfIn PDF document text
    • https://oancora.com/ckfinder/files/damup.pdfIn PDF document text
    • http://ajej.pretty-match.com/upload/files/juguwepokek.pdfIn PDF document text
    • https://tttinox.com/upload/userfiles/files/jezesinitexafudajojekatog.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613819a8ca464---lokabodifijifuvegoxe.pdfIn PDF document text
    • http://pp-aqua.com/userfiles/files/wisoturilupumanopoxak.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/bikoserezozararugezoma.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_off0000de0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0E 21908 bytes
SHA-256: 6e899dd3a5d8f862a41a42fefeb1bc19683ad3b7b10f8dfd0c7e41f83d0acdc9
font_01_sfnt_off000115ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E05 11024 bytes
SHA-256: 4b6ebd2ebde13b30c2d2cbe084341a1b06daaffef430af50ddfe84c8a9254cdd

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