Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a6e19b41dd6fbb…

MALICIOUS

PDF

77.6 KB Created: 2021-07-01 19:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a3f9b3119527a74148c4bfc5d5adb5dc SHA-1: ee968a061e4b2545ca9e5e35306c37e4481eece0 SHA-256: 42a6e19b41dd6fbba8ee1662a5939f9c40249903e317e76ce32dee1976d6a845
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple external URLs, some of which are hosted on compromised WordPress upload storage. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites or potentially download further payloads. No scripts were extracted, and the document body was unreadable, limiting the analysis of specific user-facing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://lapenya.cat/imgjovesnaves/file/zejexuwosijukakarobo.pdf In PDF document text
    • http://agcslohian.com/userfiles/file/mazisubuwotofik.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/numifev.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/8459b91a3c9d114aad7ac44093c596f9/79930067608.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/vubalumivalarizez.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/40612067647.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/acce4f366fc048ca9e87209d8fecc4b7/12452356925.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/4019049777.pdfIn PDF document text
    • https://mytalk7.com/_UploadFile/Images/file/61196428098.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/5592264651.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/15d1a001e707eaa9863d82d4cd053058/nagomupavikovi.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086036343166---numenojunovilakekeme.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/fepijabu.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/e87e6a51925247b589d2e572c1a78268/83006430905.pdfIn PDF document text
    • http://healthywithhart.com/res/file/93120681007.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/84345300548.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/rpr93sb2ltbsodahnnt1c9io2s/36288806886.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb167a139f---laritabe.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/t3irldikkkdhe5jdrdemu809dp/jegexojazabixezuwizi.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1bf7ee1c3e---puvewerutigugapu.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/d18a5231276a115b00c67be0827a967d/13275587562.pdfIn PDF document text
    • https://inncredel.com/uploads/rolero.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/093a688257e22ca5e35e41b6c6a6a9bc/kawoxotexajijojevozox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=the+autobiography+of+my+mother+jamaica+kincaid+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2A 16800 bytes
SHA-256: 001530726a67c509b480ffc37c81e80807bff3c792a0f1b7b67c92b698e93a5a
font_01_sfnt_off0000f66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66B 11392 bytes
SHA-256: 717a7143fe955d7372ce72431e3c7cb3e885a9ed4d9f35b85422b0ef10e9c01a
font_02_sfnt_off000110b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1