Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edad69ac4859144…

MALICIOUS

PDF

78.9 KB Created: 2021-07-28 02:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: f5371861f3584735ed33e1816d504069 SHA-1: 084c330e14b71a7ddb517a649bb551a77ee5f89a SHA-256: 0edad69ac4859144da143988fbf4965b1a55d34beab5bfe4de1a26b833604f19
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning model as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content or download further payloads. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/144c214b07dc72151c73dc69b674e426/18165801305.pdf In PDF document text
    • https://ldcpc.com/ckfinder/userfiles/files/78055380351.pdfIn PDF document text
    • http://1-champagne.com/blog_images/blog_/file/96781067192.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/80842bdbaae02e791a13a4e1f3b9b240/17448283789.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160900cd570575---puvefazemarim.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608670d68aa9e---23022416079.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/qljn6qn8v3du4bnkeq83rjq756/92248055858.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160817ea818b7d---41232315988.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/b2623b77901015509caeb2599081ecfe/19378672789.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/74956926502.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/ep461nrgj5683tqhvtt8s67pe2/zaxixiseb.pdfIn PDF document text
    • http://shiokuda1.com/contents//files/25040800544.pdfIn PDF document text
    • https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/12651363813.pdfIn PDF document text
    • https://catwalkdogcome.com/editor_upload_image/file/57439814901.pdfIn PDF document text
    • http://ozari-ua.com/files/file/posikilubimufinelubinid.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/30392963156.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/5b8871173eae0bb96b874aecf9643c2a/81457698709.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c351975ff---18587772184.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/30345081168.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0c230deed0---15052273377.pdfIn PDF document text
    • http://gardnersunited.com/clients/e/eb/eb3320446930dd457027df34457c622b/File/6527608021.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/4ea2823fbc4a1ec7690c4ca35b1b3f04/76859647998.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a91f5613ffe---fatipom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=bhaktha+prahlada+movie+mp3+songs+downloadPDF 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_off0000cf7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 16748 bytes
SHA-256: 829ec978d6cec91f8a99d8150c96d8964c69a08aeabc32b9cab3c26ac7d0160e
font_02_sfnt_off00011351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11351 11308 bytes
SHA-256: 89092bac70139997fae457f3f7804a749fa039cad83a467918dbda5760622f43

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