Malicious PDF — malware analysis report

Static analysis result for SHA-256 5030626fe1d844a3…

MALICIOUS

PDF

89.8 KB Created: 2021-06-30 10:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 622f5929d143a1eca80008c6eb1ba95b SHA-1: 9a2847dc63cf785dee5de226ca6d50f49c251819 SHA-256: 5030626fe1d844a38b081845292b6390cd611231049d8403f573a97ef62fadd4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories, indicating a link farm designed to host and distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm nature are indicative of an attempt to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c86020953---71946914053.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096092acc629---buwaxubuwokije.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608485e20d578---sezebigarojubip.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/em6sr869p9tau8nr55hr25dsei/83495893592.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210525150943.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/xogizeriguguxarurakis.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094cca242d1e---tokusulubomazexonijox.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/uvc4mlgd6rq2ol4og3qjhlo2kq/27705864727.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/loluf.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/28855184034.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/dixamakimura.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e17a03a336---18424046032.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/3c93cd6c6a0f78c285b2a1a89d06b71f/vafar.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/4kbttujvgm0fd7l9tccqq34aq7/voruxadidujowe.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/77302020107.pdfIn PDF document text
    • http://groupkaishan.com/d/files/41541074245.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160848cba28cbb---89051693044.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b04595e3b---94472192159.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16089948f9a486---71415804783.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/xifepozonazemunaguforus.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/56963612193.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0a6da5f9b---28691544112.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/2895f0h55r8kvth5fke66ben03/nabevekoxetovegusopaduwuj.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/dizawoke.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/e14cb99cf75fbdd755ed50f32c417b98/7498522683.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=peace+lily+new+flowerPDF 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_off0000ffa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA7 16512 bytes
SHA-256: ffbb556f2b012869d525cd000013bf5f91335be24dcb08011dc79594315e3e74
font_01_sfnt_off00012a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A86 10264 bytes
SHA-256: 45ec1c3e09f07830064ef8be394bb5e8f15c7db9b36c0c79ad2c9a52d1da410d
font_02_sfnt_off000141c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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