Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc30ed110f4baacf…

MALICIOUS

PDF

86.6 KB Created: 2021-07-23 06:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 36f6dfe774a672484af3d581c71b8418 SHA-1: 34610f432e1a3025ef6db2e599c2fe8029c0f500 SHA-256: fc30ed110f4baacfcf0aced5d79f1fdbbc45497c606a3896c4b07fb2ae50db20
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised CMS upload locations and disposable hosting, suggesting an attempt to obscure the true destination or host malicious content. The presence of embedded URLs and the nature of the link farm indicate a likely phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

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://doluhosting.com/calisma2/files/uploads/71454733070.pdf In PDF document text
    • http://stolizstekla.ru/userfiles/file/mametive.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b23cce3b687---35728193651.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/10029516588.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/mimobadunizedulutixum.pdfIn PDF document text
    • http://hkacca.com/userfiles/70965032550.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/gaxabapekifalazesegozover.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/04fa1e75a3cb3e1e0020b141971854b7/46365266750.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f645844576704dd92176c8171ee49448/viwinajinejon.pdfIn PDF document text
    • http://splogservice.ru/content/file/jetulopivipuruwutezat.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae6e3d4529---gidutokezevoxetimefagab.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d45379b337---gexede.pdfIn PDF document text
    • http://chelseacarpet.com/ckfinder/userfiles/uploads/luzogufufe.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/sotodoful.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a3e43ed1b---sezepiwewukenitog.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/vojotozejawonelivik.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ea0ac753a---nuvajemoxonuvemozole.pdfIn PDF document text
    • http://jkbprivateiti.com/userfiles/file/xulawesotefobuxefib.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/03b46232d258052f08338743d9e62579/fojirelikezobug.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/784addf48e3db7319398ee4896476cea/93518016576.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/9d51aaf4c81de88b0fb002face430a13/8359985860.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/929a630059ab9d2328e13e1a51507d14/66978549780.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/guxozikozojawopev.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a638d160---rovogikilodojifotepokisak.pdfIn PDF document text
    • https://duproject.com/uploadEditor/files/8742779427.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/powore.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=neon+glow+icon+pack+apkPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA71 18920 bytes
SHA-256: 050f9e43ca041ece5fd98e4eaecdb2ad96144e8430b6b4fcac160a6dff09dcfe
font_02_sfnt_off00011a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A68 10340 bytes
SHA-256: 0d9046ad45d652663d3604a0dc0c39077485e6a76f72e1e212ca16064be68f29
font_03_sfnt_off000131e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131E1 6316 bytes
SHA-256: b5f23487fdaf9ce978505cb3001a125c5669a159b7f0afa32525c4b9b98deed4

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