Malicious PDF — malware analysis report

Static analysis result for SHA-256 941928dba2080897…

MALICIOUS

PDF

578.7 KB Created: 2022-02-26 16:17:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 41be6da14006ee9d1efde35cb67aa2f8 SHA-1: 329d0012a8c0277bccf8895f4e106bef682dc6c5 SHA-256: 941928dba2080897629e7d86ad877808e0da4c80a13fdc1b072c0b39cfdcad3c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also contains numerous links, several of which point to compromised WordPress upload directories and SEO redirectors, indicating a phishing or malware distribution attempt. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3912

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lovig.co.za/XSRYdR1H?utm_term=ownership+structure+and+financial+performance+pdf PDF link annotation
    • https://securitydm.rs/slicice/file/9777462889.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/jitiwadabasukoviwepasa.pdfIn PDF document text
    • http://tweedehandswikkelaar.nl/app/webroot/files/userfiles/files/wudesuwivoxevusabon.pdfIn PDF document text
    • http://huijingweb.com/upload_fck/file/2021-9-20/20210920025520819874.pdfIn PDF document text
    • http://opuspointpartner.com/ckfinder/userfiles/files/tajebozefajugaruwadojape.pdfIn PDF document text
    • http://iwakuniyumiya.com/js/kcfinder/upload/files/92685109120.pdfIn PDF document text
    • https://olterus.org/contents//files/tobopakikegapasuzokagesiv.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/narikimagi.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16175d47a5d31d---60465245162.pdfIn PDF document text
    • http://eyupsifalibitkiler.com/resimler/files/mibunelujotigowipibewut.pdfIn PDF document text
    • https://pannonfinanz.eu/editor_up/24166331677.pdfIn PDF document text
    • http://upservice.expert/admin/ckfinder/userfiles/files/3893301318.pdfIn PDF document text
    • http://profesniprukaz.cz/ckfinder/userfiles/files/baxibaxopanekatazezep.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f3c2ac97ac0---makuxixuvireroxowir.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/5129c1b8cc3927a778346fc4ec5e94a9/sowigosugetavejop.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/162056ff7eb664---feramudoxagipabelalako.pdfIn PDF document text
    • http://drigungkagyurinchenpalbarling.org/upload/userfiles/files/12476162934.pdfIn PDF document text
    • http://aroma-es.red/yamituki-n/uploads/files/77547754095.pdfIn PDF document text
    • http://ing-triplee.com/ckeditor/kcfinder/upload/files/vilukoso.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/161250d0a14a36---70926627165.pdfIn PDF document text
    • http://architettosbaffo.com/userfiles/files/73626574623.pdfIn PDF document text
    • http://seatraderhk.com/userfiles/rokirepiwunasomapoj.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/161701947701d4---nususaleveti.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/pewidulopuvixeve.pdfIn PDF document text
    • https://cheesykeju.com/contents/files/susinegakuwunotajuj.pdfIn PDF document text
    • http://labonscafe.com/userfiles/59972505383.pdfIn PDF document text
    • http://roberthalasz.eu/uploads/file/suxisanoxoramejodava.pdfIn PDF document text
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/44006463850.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/24619907572.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/totapofulazewetorov.pdfIn PDF document text
    • https://rugsdirect4u.com/uploadedfiles/file/72936353911.pdfIn PDF document text
    • https://sentinels.ro/userfiles/file/56008039698.pdfIn PDF document text
    • http://turbotechnik24.de/userfiles/file/jobexorazazovegeworeg.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00089a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A91 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0008b1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1B1 11096 bytes
SHA-256: 2d84e0b4a754fee4485ea9effbbf6cfc91256d7303d0f444f25f109b726c6c55
font_02_sfnt_off0008cb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB6B 18552 bytes
SHA-256: d5ef17eac0845c14be15e006bf6f312ee5f67d51b7b8e54868bc09fe49302966