Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1118d1a7081480…

MALICIOUS

PDF

82.1 KB Created: 2021-07-22 19:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c5e3a54d7594d971570b613fce61af19 SHA-1: dc8b9a692eca072d8c3194eb291770942b1131f0 SHA-256: ba1118d1a70814800bc19fc3d74d536d56961cc8fbca480b2a31ba9a492a3273
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to external resources, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern observed is the use of a link farm to distribute further malicious content, likely as part of a phishing or malware campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/7a2cef98d4d35b8397c6334755fca399/karevexafisabitupatep.pdf In PDF document text
    • http://omgmediatank.com/userfiles/files/49120787501.pdfIn PDF document text
    • http://llux.vn/uploads/files/zasujimupazuxozegunitime.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/wagox.pdfIn PDF document text
    • https://studiorampinelli.com/file/9724325254.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd9f8ef148---77021071001.pdfIn PDF document text
    • http://alvirne88.com/clients/71477/File/67673426231.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/lirdnp64fvrcu9ulrlkp782cp1/gojivurivuninoxizawax.pdfIn PDF document text
    • http://cambridgekapurthala.com/damana/userfiles/file/mirep.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160842647bf7bb---fonaxefi.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160819a0850a09---50055910580.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca2a6cbdad---52186885858.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/42231309195.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/j49274nfvf37buf3q9geb4mu94/zalasonezezemajibiteri.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210703_830DE28D9A0EE657.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8d9013625---14404071083.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/kexolibazivaromigeguf.pdfIn PDF document text
    • http://xn--80akoseq9f.xn--p1ai/userfiles/file/69738342882.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c93830ad0e6---xobovegevamodojeraru.pdfIn PDF document text
    • http://chromowane.com/userfiles/file/39730807130.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/tuvetewegiwijavubenanewa.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/ff3b8ad2823d52b7c3522a7bcf0f4ce3/zemezixajutopusojopefa.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861cce59c4a---lebevikere.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608406ab0e0c7---lojasel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=how+to+make+a+cool+redstone+door+in+minecraftPDF link annotation
    • 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_off0000daaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAA 17240 bytes
SHA-256: e7121ac38c976b4d451f339cf88fb888bf9fe61ec26a256e9db67174c10f7d2c
font_01_sfnt_off000107dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DD 10808 bytes
SHA-256: 55595064178ff2fda1349196ac83019cb9c733e485dd427907641646427064e6
font_02_sfnt_off000120c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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