Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94942734220077c…

MALICIOUS

PDF

84.2 KB Created: 2021-07-04 15:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 6fa4231a0aa342f20142c1d2aa6f161b SHA-1: 27e6a0c881b5f90844af28ae48c797bc6e340aa1 SHA-256: b94942734220077c9a54eb39c9d5a5aa8703dce381dcb90c5ed3e057670aebbe
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm directing users to multiple URLs hosted on compromised WordPress sites, likely intended to lure victims into downloading further malware or engaging in phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/0b40410909c3256666302f8b867f0f00/nexagun.pdf In PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1cc3d49f67---35249120800.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/f0d72b089106b42d3bfa53adc198ba6a/wejawelibumazon.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/feluzewax.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/98ji7qi20nlone1j8kv2t5la82/pakirizixiwifo.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/82541297008.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/2585788f0acfbb2357d0b0efafe3b87d/kibekijututego.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/a2296940fd2bb1c226bf8301141c5b35/51632376537.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/numeraxuxifu.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/76870594109.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16081ff2b70fd0---fagevedizevumevevufazasa.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/fopiwapumuxulakuz.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57816ac5e9---967094529.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f73369e538---gisurufupulilopebikuwapir.pdfIn PDF document text
    • http://springbook.no/files/22417253668.pdfIn PDF document text
    • https://dhesient.com/media/kakilexiwulefuda.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/lagukiwodamosok.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/68060979966.pdfIn PDF document text
    • http://matchonusa.com/uploads/files/19344418006.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/e8tpj8suvtk2qdm9aefrhr25dk/21939982331.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=i+want+to+know+what+love+is+mp3+downloadPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE2 10924 bytes
SHA-256: be0eeb6f80f7f16f4f28a0cfa9ac9f1414ddcb3d510e409c7d45052db88fdf21
font_02_sfnt_off0001170b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170B 17140 bytes
SHA-256: 375e3e7a280474b4fc11bc0a5494f5e5c8a6aacdb7d03276656d46a9be01dee7

Open this report in the interactive analyzer, or submit your own file for analysis.