Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a67b879bbffae29…

MALICIOUS

PDF

83.0 KB Created: 2021-09-01 15:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 26bd67426a3ce1d9f2ce819a412fac76 SHA-1: 0f347502fe4a1f5f6e9cc6c9422e9bdcc532a24f SHA-256: 2a67b879bbffae293a5f6bf97919d26e9a85254f9873bf91d0c597d51baa1773
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The embedded URLs, while numerous, do not contain exploitable content within the document body itself, reinforcing the interpretation of the document as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ce0d2501a5e---49116628432.pdf In PDF document text
    • http://elfobchod.cz/foto/Image/file/zavezadodut.pdfIn PDF document text
    • http://ryouhurt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/91142815276.pdfIn PDF document text
    • http://cesarrodarte.com/userfiles/file/vebejiw.pdfIn PDF document text
    • http://it-hair.com/userfiles/12670301048.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160aa6b04dcbd2---49851944684.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/eb6c31c67a7a544232319937b3268c76/lanozarijaso.pdfIn PDF document text
    • https://sysyanginguvenlik.com/uploads/files/16650642946.pdfIn PDF document text
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/figavodivabed.pdfIn PDF document text
    • https://simplehome.ro/ckfinder/userfiles/files/fagiputena.pdfIn PDF document text
    • http://anticacarsulaeborzoi.eu/userfiles/files/14261920912.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607261ffcc3bd---16593994987.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/cb567a88eeb72aedd86435a9e527fd39/40388652200.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/pekuna.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/74117516016.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/0582b4efd267659bb13757806907fbcf/wulax.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/8f70a4c96286ca1a1b5684c68ab30125/3042327639.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160844048dc93f---maxubujuwigimirilapabox.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/ede021ee47d56988dfca65cbe8755896/80873839127.pdfIn PDF document text
    • https://ssvacancy.com/ckfinder/userfiles/files/tuderodajamiwaxupeg.pdfIn PDF document text
    • http://vodova51-53.cz/files/66926637735.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfb55dd6d5---85204021370.pdfIn PDF document text
    • https://all-new-wow.com/upload/files/vofip.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/s7uoc7v3edam602gc7am1ccd01/21795952109.pdfIn PDF document text
    • http://brukbet.com/user_images/file/juwirifamitegikukakaxofaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=lee+dong+wook+suzy+baePDF 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_off0000e138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE138 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94A 17192 bytes
SHA-256: 157107194ad43d3695575c60852e9c9e27bc025999ee27e82e04c3553ceaa4b5
font_02_sfnt_off00012608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12608 10636 bytes
SHA-256: b3ddd333896fcd71ebaa8cd1e07c54354deb8b7df04b23b1c7ae89481a116c38

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