Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fb53b0b041109b…

MALICIOUS

PDF

203.6 KB Created: 2021-07-07 02:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 11748bcbe906822f9aaa115aedbd26aa SHA-1: d5f27f857f0e95ff6c53a03198d25c8b259a0253 SHA-256: e0fb53b0b041109bd32ba91939e3db2428fed2b36a6d23dec6c4ea83bae9ffa8
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress sites, which are likely used to host malicious payloads. The 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristic indicates these links are part of a phishing lure for free downloads. ClamAV detection and ML classification further support the malicious nature of this file, suggesting it's a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9509

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
  • 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.
  • 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://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/of0k43n0ira0lpvoi4jffmk13s/5246341051.pdf In PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812bf08ca97---23844176972.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/33eeb803d5a9f9ed36b5a2d4c5e29d4e/mazev.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/nabepetelekoxukebefijil.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60a5a069d7---44818728407.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee5625f961---64558871257.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/ehem69evncqebgacapvs50lg05/56150029411.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/3e074198ccadaaa9e412f748352f8165/zexodanibelazurewusudol.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/36844808641.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/k76qs5govg4r01rlidcgvs3h66/50955352266.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080252de3fb9---mideremiwasuzikuf.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/kudebawajusoxegukide.pdfIn PDF document text
    • https://agatanorek.com/files/file/60022385291.pdfIn PDF document text
    • http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/51360808741.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/ttsoelldcsapgh76aad31o9uvj/vinat.pdfIn PDF document text
    • http://caramelitos.sk/files/43982855451.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a0989ba82fc---lomokorogofuda.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/63873378963.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/rinivejazegarerigisaxu.pdfIn PDF document text
    • http://nineslash.com/user_file/file/56706549531.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad78b7979a---dunabowejidixizuxinon.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6faad0e26---mitozerifezefovotisufigep.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/1c0a1de1d6c02d60168d4c25f187683a/4829568131.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/28854735271.pdfIn PDF document text
    • http://bangkoksolarpower.com/syner_upload/images/files/jemijubudijo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=set+for+life+6th+july+2020PDF 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_off0002ad52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD52 22284 bytes
SHA-256: 8e278f90131ba40bd4771e1c4eccac1c2bf598b0c832d2cfa1ea8d5001b5acd6
font_01_sfnt_off0002e441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E441 10704 bytes
SHA-256: 91d1bbdf2252b794deb6054997ce5b371ba6456b52f0465647720ac6da11e855
font_02_sfnt_off0002fcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF5 2388 bytes
SHA-256: 0157692ad7dab4cc08f99ae6b8ab1a64c4a9ab16746eea58cc8898f0b21f9deb
font_03_sfnt_off0003077c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3077C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1