Malicious PDF — malware analysis report

Static analysis result for SHA-256 0530e8ff321a04c2…

MALICIOUS

PDF

81.9 KB Created: 2021-06-29 03:24:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 212ee673181a5cc5d7f1bf4be8f214fc SHA-1: 4982861d07c2a0b6830e16968acafd68c6e29046 SHA-256: 0530e8ff321a04c245b1af738d6d7a4ce467134e7743a65cc90dd86f0f84945f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely serves as a phishing or redirection lure. It contains numerous links pointing to websites, many of which are hosted on compromised WordPress installations, suggesting a tactic to distribute further malicious content or phishing pages. The structure of the PDF as a link farm on disposable hosting further supports its role in a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://wastran.ru/uplcv?utm_term=selina+maths+solutions PDF link annotation
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/a99b51ebbc42f74655490edea055303d/dusimasutewasofopusanar.pdfIn PDF document text
    • http://daebokjungdb.com/uploads/files/pegazabewodikiwaboxapavem.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16076b5df486d9---kujolelowatuweriwe.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/a104d2fff398ca805dad66f5f94f1cea/72380913098.pdfIn PDF document text
    • https://magerp.org/upload/files/zalevujalavetefadatu.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/abcj2f4dqe2rlhmfn17p2q05m7/wabewixikawebetogosa.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/f24674068bbbe992d7999896b9d5c352/44898476062.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/qb3oi8bkp2pt4f61t9qb2j6qta/5278936680.pdfIn PDF document text
    • https://skspiti.com/userfiles/files/23452929720.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/vadesubojus.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/986279f62de98b00f7335fd8c680a7f0/ruxavakuruniviz.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/a5b05e62e29984d136de8897c2c7484d/9708539961.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/c60698aff3689c4d53e3e646760ad2d2/49476804897.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab145bd6fa---72984655999.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/92070c25b10d44d22e602730b3deb723/52134056465.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/79917735033.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e17d3de3e3---wakinuvunajowenovok.pdfIn PDF document text
    • https://noticky.net/akce/fotky/file/vebabetujarakefi.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/95236745350.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160cc5042448c9---72943938294.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/94628048989.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/11893cd47560bb6cc0f05f3e18a4d5bd/zizesivalavanuzajuri.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/21519896088.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd53e08321---55674566673.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_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 16440 bytes
SHA-256: 525af28e23de1589810e5792f43d2cf0c71a3949abe87aa6adddff0125f49dc6
font_01_sfnt_off00010aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AED 10448 bytes
SHA-256: 090afd978f01172d4f1e9afb46a48c2dc9551846e2750debe1309018fa87fdfc
font_02_sfnt_off00012264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12264 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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