Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2ac3c3650a618e…

MALICIOUS

PDF

74.8 KB Created: 2021-09-29 01:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: f097b074e4dc1eb99dff7b0573dfdb7e SHA-1: 51c73514e9223e2e04ca8e5c28914bc78d184257 SHA-256: 0e2ac3c3650a618eae40c8954d1749ac737e1a4a3bb617281e525fa8da6338fb
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites acting as a link farm. The primary URL suggests a lure related to Microsoft Office 365 product key activation, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wastran.ru/uplcv?utm_term=microsoft+office+365+product+key+activation+free PDF link annotation
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613222122917b---14034548330.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/nogupamidok.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/79311475233.pdfIn PDF document text
    • https://eastmangroupllc.net/ckfinder/userfiles/files/tedumupa.pdfIn PDF document text
    • https://grandegroup.net/files/19034314206.pdfIn PDF document text
    • https://rgcsmt.org/ckfinder/userfiles/files/99586111890.pdfIn PDF document text
    • https://loyd.rs/images/file/kufuwufivajefusuzotusiw.pdfIn PDF document text
    • https://ataru.site/js/ckfinder/userfiles/files/25825827817.pdfIn PDF document text
    • http://azs-szermierka.pl/zdjecia/fck/file/66234835041.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16142401b928fa---vizegodafekogofonufet.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/28801329802.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133228110a3d---loxasig.pdfIn PDF document text
    • http://pro-customer.de/userfiles/file/27890392175.pdfIn PDF document text
    • https://makiriaszto.hu/ckfinder/userfiles/files/27653903727.pdfIn PDF document text
    • https://shoppe.everybodyisnotdoingit.org/gift/userfiles/files/68559083263.pdfIn PDF document text
    • https://ilexgold.com/app/webroot/files/userfiles/files/zurutax.pdfIn PDF document text
    • http://tiyuchangdi.com/upload_files/files/20210921_173123.pdfIn PDF document text
    • http://platcometals.com/images/file/61665301185.pdfIn PDF document text
    • http://punaide.com/userfiles/files/83225269642.pdfIn PDF document text
    • http://czechdidgeridoo.com/admin/upload/file/rarevug.pdfIn PDF document text
    • https://dortmundpools.com/contents/files/17432165565.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/kufosutak.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613274eb043f2---volaxujanali.pdfIn PDF document text
    • https://khmernative-rice.com/userfiles/file/94734562897.pdfIn PDF document text
    • https://alident.centralcms.cloud/galeria/files/kodesaxefotef.pdfIn PDF document text
    • http://architettosirocco.it/userfiles/files/19426357110.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_off0000b9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D8 11408 bytes
SHA-256: 9256e70885fc25bc1ad758784bc123e8dad71feeee9d05f48a90a15f4d7d4c8e
font_02_sfnt_off0000ed07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED07 18372 bytes
SHA-256: 7e91e4c097a9f609c6dc6facb06e6b5225f19cd70893b10602d68ad04d534b59

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