Malicious PDF — malware analysis report

Static analysis result for SHA-256 75106ab8c536e042…

MALICIOUS

PDF

86.5 KB Created: 2021-07-01 12:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a6b1f4c98239b5d99d5ffffedc26e250 SHA-1: babe3ceba71bbe1d203c4c44e126c2e49f54b720 SHA-256: 75106ab8c536e042b3c7af4da13ffa46a2912f9f19efc463648ac0962e7a6452
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=hello+neighbor+2+download+android PDF link annotation
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/2f926f4ff8c7032175a1274fcaa9f11f/duwomiwopixa.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/97588653813.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/a1c56f4oj99urvt1renco7j2ru/dososagufeteruwavogovip.pdfIn PDF document text
    • http://vimar.ua/userfiles/files/36200982959.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072795a10b6e---silelopu.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/630286501d440366ba2303dc9268a057/23988131859.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607264963351b---16445100826.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607690b40a511---69635547034.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/da0e6c9c0f77da56bddab64ab1555d4a/81229858215.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608086a6bacbe---10134580572.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/sv8ls9cm6758sojmvdfbrpu8v6/69877267786.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/gipezapufo.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33fc96dac7---46727484292.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160967bfcefedc---29792885673.pdfIn PDF document text
    • https://biocoils.com/img/file/susovinukinexebaliwukova.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608010f0c9822---6305178778.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160768e96c7651---49671850966.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/77657746135.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/135762a0777bf875d432c8466aa539c7/14775385822.pdfIn PDF document text
    • http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/94087980256.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c46e3632ad3---37309247707.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/zeruf.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16084a984591e4---puburaket.pdfIn PDF document text
    • https://ropaalmayoreo.com/images/userfiles/file/sagusase.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_off0000f1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DB 16580 bytes
SHA-256: 02ec41159cad17528198b6101126448f724875b0ab33ce6b11be1cd9dfc788ad
font_01_sfnt_off00011cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAD 10600 bytes
SHA-256: cb4d535f784aabf5cc0a1d308bfcc8761262e6b622bb3fc0e877d973e6729319
font_02_sfnt_off00013496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13496 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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