Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1741589533b70da…

MALICIOUS

PDF

78.4 KB Created: 2021-09-17 11:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 01ea3ec741e30c12db94564f7f1ad9ca SHA-1: 362b206995f24973d3a2d9a7030a4a80069fb9f9 SHA-256: a1741589533b70dadfac54a53f9d7056dadecd2c276beedc2412385928c4c5b8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, such as 'https://pixomot.ru/uplcv?utm_term=how+to+install+plants+vs+zombies+2+mod+apk', are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=how+to+install+plants+vs+zombies+2+mod+apk PDF link annotation
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370b80765da---wewom.pdfIn PDF document text
    • https://bakotech.at/uploads/ckeditor/files/51382679895.pdfIn PDF document text
    • https://sowlindia.com/userfiles/file/54997881377.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/ziwajodavodiwisusejuzuvi.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/fanitijetegoranu.pdfIn PDF document text
    • http://www.ambatownship.com/ckfinder/userfiles/files/damofoxa.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/11189053176.pdfIn PDF document text
    • http://borik.customreal.sk/data/files/63124010753.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/l551gprmopln8u2jg3blh4h506/jifitotitixopogu.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/dazorositesalagezijisadog.pdfIn PDF document text
    • http://seasonmediagroup.com/pic/file/86770263615.pdfIn PDF document text
    • http://clinical-pain.com/pds/userfiles/files/10169533915.pdfIn PDF document text
    • http://k-souz.com/userfiles/file/89392196141.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/1813872830.pdfIn PDF document text
    • https://proartgaleria.hu/files/files/96506533846.pdfIn PDF document text
    • https://yellowmangocafe.com/userfiles/file/fuxozidalelatobisateg.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613847063d3c5---73655680272.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161414f65b835d---vokugapadurubevol.pdfIn PDF document text
    • http://www.oomewatersport.nl/upload/files/6458092132.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/33264727583.pdfIn PDF document text
    • https://gesema.com/UserFiles/file/daregibuxo.pdfIn PDF document text
    • https://phunhai.net/upload/files/tejefut.pdfIn PDF document text
    • https://ciiinnovationsummit.com/ci/userfiles/files/78617988486.pdfIn PDF document text
    • http://cobmedia.hu/include/wukujanuxumajibuwagagupuv.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/gizuniwis.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_off0000cd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3D 17412 bytes
SHA-256: d5c1adfba274af782000c674e9a1eb860d282a44504298465fb42d896ecef7bf
font_01_sfnt_off0000f9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F6 11008 bytes
SHA-256: 2806f83739e6c93bd44ba1bdaab5a7a0e93dee403b1d96eb4f47ba5ddc8d99fc
font_02_sfnt_off00011365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11365 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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