Malicious PDF — malware analysis report

Static analysis result for SHA-256 056193118d5d37a3…

MALICIOUS

PDF

105.0 KB Created: 2021-06-26 20:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ddc5705e97572faf9887a8ddad8489cc SHA-1: 39088b87bd22af465e5d3c9e15adcf382e41b1e4 SHA-256: 056193118d5d37a33083abbf590c9d4bdf6714afe93ed3fad8b988a06e52828c
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, which are indicative of a link farm designed to obscure the final malicious destination. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The presence of multiple compromised CMS upload links further supports the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9308

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://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724e8f2dc54---82479251270.pdf In PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/tkdb2ftvd75sjtg19kf5ei3853/77824222764.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3c8b47af0---petopazipizibadatixisuno.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090cbe8a9b47---xebinaforurutawedabub.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608134a393ba3---potunusofef.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608127d7220cc---zejusimaloraragonesemume.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/4a28a7cf1b97545429c96849ca1cde17/20160296423.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd3e426cc8---9048698894.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/totemusemon.pdfIn PDF document text
    • https://raiporjai.com/piceditor/file/sezev.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/2021511636238618.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/koruni.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609498617677c---lomujidopufapuwiwape.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/3c0f095da2a619e8af03d74bc3e9f64a/tuvasikikefotukimuduxugu.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/824176296.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/e6607e360641f4e4012f993759e2915e/61900304961.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b41ad51f738---18138149189.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/tps6s6f58i4530eob8g4jbm137/66238647788.pdfIn PDF document text
    • http://dharmapremipariwar.org/userfiles/file/81416849373.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c24ca8e3674---48991917493.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec99b79aa3---fuvuwanezagoxusogofijagi.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/f64dde2a070ba14b065217710611f79c/60563899277.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/kqmbcjtb5ug7983mvhmetmr0vl/9237274275.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/45336649155.pdfIn PDF document text
    • http://sport-way.ru/img/file/25111159847.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=theosophists+meaning+in+englishPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00016a14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16A14 23540 bytes
SHA-256: d4cb55714bb7b4206ef597b6871b4c1492a06219415fecb55197527f17912921
font_00_sfnt_off0000efa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA5 10560 bytes
SHA-256: 31d85f0ddd5579775b8ffff0d9184fc89a016e4296bc313da13c4dcb60ed3f8e
font_01_sfnt_off00010798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10798 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAA 24184 bytes
SHA-256: 1412e98be56c4301d15f84aeb5602bc4c85db49247e8895593b47479165ec3bc
font_03_sfnt_off00015a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A5B 4264 bytes
SHA-256: 980b1e1209112b9b472011676ce91322da46698476647e08b50909087d6d5f85

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