Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70696d150fe98b2…

MALICIOUS

PDF

95.4 KB Created: 2021-07-24 13:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0f7a79a0afce1e26e29f34ffe42d1a5c SHA-1: 917346be0e3eea76999d04bd4e9b02871f4d1107 SHA-256: f70696d150fe98b257a3c95d77707fbef7cf23ec6180734b7b4b3aada400afff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://myphammonly.com/luutru/files/17509087597.pdf In PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160792a374508d---mawif.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/9jjusp895220qu61fc7j6eph89/60884038073.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/21698559fdbf243d8f0aa39d6740af6f/56725935889.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/du4d49au012hmtapd1lnfletvm/tesasotomujefari.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a52ea8cb3af---lesamenufekelez.pdfIn PDF document text
    • http://www.peretprod.ro/content-images/file/69522922718.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/25546689241.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/9f711b534c28b163c20965c85ee4f17f/47629116344.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082988bccee0---26284223062.pdfIn PDF document text
    • http://palirna-frydek.cz/uploaded/file/tafelaranegajajezodekuzop.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/dcb47b4aff10fb5e3525d5b9a5a42a00/fexila.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/paguzuguf.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160744f2d0381b---99434934563.pdfIn PDF document text
    • http://ozanatalan.com/iboard/includes/userfiles/files/gifimoxe.pdfIn PDF document text
    • https://gyandeepjkss.org/userfiles/file/vokigotozut.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/778d20b63dc9cb38daac5cbca4ff0237/50941731384.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/45582353766.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/rjcthkl00pu25jtqvhfd5djrcl/vogijelotokugibepu.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/20f33fd3ca01b3fe82167de0e33a1068/27133790897.pdfIn PDF document text
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/7ed273641c1ed592611fb3c62d5133d7/17489068120.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/20766898992.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/r8drc5h1avn8u3mcd0q30ijrms/xojusivizi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=deepthi+shetty+facebookPDF 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_off00010fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC4 17320 bytes
SHA-256: 21b880a578bb48430ed547292af43a44b82691f286a61a0f603fdb7fca7bd972
font_01_sfnt_off00013d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D45 10676 bytes
SHA-256: 68e149c49af7c16d93b3dd87cf9b801faa1c28f1f2b84f96aa9fd5b26a3616ae
font_02_sfnt_off000155cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1