Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0aeeda486b1cd5d…

MALICIOUS

PDF

83.7 KB Created: 2021-09-14 15:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c92b0d7bddae77b0922d22786191c855 SHA-1: 975c96efe2ade8bda90d30b180692080fee15e38 SHA-256: a0aeeda486b1cd5d3e4b656c6d346aa8f0a049d99cff74a2ca6d00849b83f41c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The document contains a large number of embedded URLs, many of which point to disposable domains and appear to be part of a link farm. The presence of these links suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://infrive.ru/uplcv?utm_term=after+we+collided+full+movie+1080p PDF link annotation
    • http://drairtools.com/ckfinder/userfiles/files/rarovivoxademozajafudab.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/rufazejifadaxewaxugo.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/jiwapikevogamefopasif.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/27190867408.pdfIn PDF document text
    • http://car-zone.sk/data/data/file/jotutotuteluzagalasaboki.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9185515b0---fenamizo.pdfIn PDF document text
    • https://www.tcf.gov.tr/ckfinder/userfiles/files/84804838840.pdfIn PDF document text
    • http://jamalcar.com/userfiles/file/57884191847.pdfIn PDF document text
    • http://chemicalengineers.ie/images/59206007671.pdfIn PDF document text
    • http://gzbaosui.com/uploadfile/files/83830463938.pdfIn PDF document text
    • https://trexanh.net/upload/files/tomizikapujepip.pdfIn PDF document text
    • http://ministryofrum.com/memlogos/file/wizotugaxojaxewol.pdfIn PDF document text
    • http://aedjtjdshbf.pretty-match.com/upload/files/75017162160.pdfIn PDF document text
    • http://audiohrestomatiya.ru/content/file/sapobuvejokuxizisexizi.pdfIn PDF document text
    • https://media-get.com/userfiles/files/sesefakebowojetibokenoz.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/tepekebovizupujup.pdfIn PDF document text
    • http://somkuthyoptika.hu/editor_up/zafumakewula.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/53089218530.pdfIn PDF document text
    • http://jfe.hk/userfiles/24662526423.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/xugebirotabor.pdfIn PDF document text
    • https://www.hippocratio.gr/ckfinder/userfiles/files/munonitabimuzi.pdfIn PDF document text
    • https://f2h63c2.ip4secure.net/upload/files/gaduxisaju.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d82130e06c---wemarolikekijalubobize.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_off0000dc50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC50 19524 bytes
SHA-256: b46ff4f01380a743b7f8595cf1289dfcb4e5bab4659ecffe685ee01efeb9b936
font_01_sfnt_off00010f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F15 10964 bytes
SHA-256: d15d0cb033e6eefbd271b33b6b152ac6488200e8a08daf7075194f5977b80b08
font_02_sfnt_off000128a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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