Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d3414b5ab51a97…

MALICIOUS

PDF

116.0 KB Created: 2021-07-19 02:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: fa62e8b0cfeed95c0ec8d2f9e9366081 SHA-1: e3fdb320951f7c9254ce5b97478f71494f644be7 SHA-256: 02d3414b5ab51a97774810c129cfad3e06fce69ac5e7fd4739d46eb9ca5f747e
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to websites that appear to be compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery through these links. The document body is heavily obfuscated and unreadable, providing no direct content clues, but the link farm heuristic and external URL analysis are sufficient.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/41946cd54725d1e45445a7e13a8f5628/82390867680.pdf In PDF document text
    • https://comtraining.cl/userfiles/files/nomojejopeb.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/surufukufezotokatevo.pdfIn PDF document text
    • http://www.truca-taoules.com//ckfinder/userfiles/files/bugiruwir.pdfIn PDF document text
    • http://vallovin.it/userfiles/files/datufejadedikipapadatuti.pdfIn PDF document text
    • http://pinetreerealty.ca/clients/55933/File/suwaf.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e84e75801f---wularezewerafusuwokod.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/d820ccf75bc10ce5e52971701fe59f15/xurokanupojojed.pdfIn PDF document text
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/26123825834.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc11275067---82925383465.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/9ce72de14d309d9b603f2c04160bc7b9/80861467299.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/1301766d2e5d66d4f805ef718e7416ef/gokilagozuzubokidevemado.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/of7hb7pl6c763b6ejin0t2p900/zonigusomosobikefomosoma.pdfIn PDF document text
    • http://sportsgarten.com/editorData/file/gajubuladafijudojolomol.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/guvenamodupo.pdfIn PDF document text
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160815c7c36de5---nuxejozuser.pdfIn PDF document text
    • http://nemeckystrakac.sk/editor_uploads/files/25001968453.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160ae1e6f3b9db---zuwovalijojaziwalemonaze.pdfIn PDF document text
    • http://candientuvibra.com/images/file/89416819346.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/8e73b31db209f5d4205370e0ba07e9af/45687407551.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e51cce236---boromevetefumipazal.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=tristan+and+isolde+king+arthurPDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/0ff61076021df47e6063382f48cf7a00/pabususokowaxi.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000161ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161AB 20116 bytes
SHA-256: 2964fc52db95f80483b04f18b26af0e148f2b36efee350803dbeabc13d292fa9
font_01_sfnt_off0001932a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1932A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001ab41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB41 10680 bytes
SHA-256: ab22aaa67258db7ee01a78fed12071f3c3b09ec35432ac6a09b205da8d2646a0

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