Malicious PDF — malware analysis report

Static analysis result for SHA-256 7754143fbe630048…

MALICIOUS

PDF

106.6 KB Created: 2021-06-30 00:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 53ee3438ae5cbdddb4a7a8dedcbbc3d7 SHA-1: 86e3aaadc25831ae19999ef56d68c33b3fcd67d6 SHA-256: 7754143fbe630048d10bf3e9a90bf1ab42976af6829fb659afec9651bd40ebd4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to lure victims to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://smidgel.ru/uplcv?utm_term=identify+with+others PDF link annotation
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828fa8923e4---tuveriwemejuwufuvetagu.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/61868683b2085a1560acc19c4204f92f/bibidudonelametupawo.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/27848521212.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b1572e448---nelobibekisimopi.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdaabc8f46---9167493301.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/71234214391.pdfIn PDF document text
    • https://papiratisk.cz/soubory/minisaxavuniki.pdfIn PDF document text
    • http://thaiboxes.com/piceditor/file/fejonubototugi.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/zubabonizupafut.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fd5835549---wiladugu.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9fefa184d---67180365245.pdfIn PDF document text
    • https://rajakeempat.com/contents//files/46936978489.pdfIn PDF document text
    • https://petrovsky14.ru/docs/files/52897802776.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbdd170db7---durivivafodofapaxopano.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/55c1e8be67958daa970f6e8d586ac37c/96149528447.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070848363605---welogulozo.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/94436052283.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/ec74a82e56d4fb16a33bce790775e7b9/9982756094.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1609a17a86fb42---30203567401.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20210615235233.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/c07d8af455e0797aced9dcb650b5b46d/82416462904.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aae14cd3893---gomusozitetarefeg.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/4681b27691c8361e3ed12f84a45416c8/28626653614.pdfIn PDF document text
    • https://codecs.ro/images/file/55904745472.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160845789123cd---33786271298.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_off00013fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FA7 10392 bytes
SHA-256: 36038c464939d7714467a44466a191251cdab2815bd91e4bf7c798309f76427d
font_01_sfnt_off00015730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15730 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F42 17952 bytes
SHA-256: e3865066c997521b1ba15a074d6ea387c9f5c67c511cc690fbc35b81d6109f7b

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