Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d0e74facc1bbc5…

MALICIOUS

PDF

92.1 KB Created: 2021-07-20 11:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: fb77fec08933bcee9c480b6ab346ccc4 SHA-1: 938e4e35d1cd938fe8c8654dba44d83005e3f536 SHA-256: 36d0e74facc1bbc5deb1c6a1db06e1fa6310c09fe612037e698133ef361875a7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://adria-ex.com/images/blog//file/83447517496.pdf In PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/4kvbn9fe9jv0ggupfm2ao48gj5/naxedibezove.pdfIn PDF document text
    • https://migger.dk/userimages/file/pagutuvoreturef.pdfIn PDF document text
    • http://ambulanceservice.pl/userfiles/file/fevotokosivawamege.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/36acbb3125e5b8f3264bd7751cbd2299/44340611709.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/42c5b9e4c8e78fe94b8108d2b53ab58f/80220278471.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/d07bls8ms9tr86dso1s403doq4/21280206467.pdfIn PDF document text
    • http://gaskinfamilyreunion.com/clients/b/b7/b798c9f9e2af69c3a5b950a06e4ade8e/File/mosevalu.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/mobaved.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a940fa02160---24632735316.pdfIn PDF document text
    • http://dlmberatung.ch/userfiles/files/36218336518.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/87790450938.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/f0et5uu2f44sm3oahut0b775jh/bogimusiduzegugo.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/d668f174a0d45c7dc476f902817f8679/jusukax.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/711b3eb74915c9812c06f829542d3753/piwaxumamasujimu.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/14d4a514cc23c01fe02d999aa99b3c5b/14217545961.pdfIn PDF document text
    • http://applexin.com/ttpsea/files/file/jomozakig.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/d21db331b8cf6e5854c2b4e9289f72c4/96434030503.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/zaburuwudarux.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab88091e98e---sasoziravox.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f332630bea---54134351302.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/6b1d14a3a1e507253e4e6c88bcdcc01c/60407678766.pdfIn PDF document text
    • https://brickbodysupplements.com/newerac2c/userfiles/file/57291839856.pdfIn PDF document text
    • http://www.tomasjelinek.com/img/pub/file/xadovodutedeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=pdf+download+the+fault+in+our+starsPDF 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_off0000eaf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10305 18248 bytes
SHA-256: 02aefd8c1e2e85a7d1d21642b0fc1c0e3731a87c5be349f44672b648d642492c
font_02_sfnt_off00013318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13318 16172 bytes
SHA-256: 637a9dac0afc585f1f105c2de408df99420c2eea19216aca5c902ef31b2be0e3
font_03_sfnt_off000148b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148B5 10636 bytes
SHA-256: 8981bb3fb53ad303782c6d6bf9cbce3ffdf31c0a9c1d82d1e8b57d9c214934b0

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