Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad73529584580de…

MALICIOUS

PDF

116.2 KB Created: 2021-06-25 20:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5e7a5cb042d838501ab77fa046e4b4b8 SHA-1: d73dde1df75c4c46bcbbfe58e53ec2d1ae5b478c SHA-256: 1ad73529584580decfc597c4e5e2a12654e05647a95d318c0e89fc4e6eaf6deb
156 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress sites, suggesting it's part of a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users to malicious content or exploit vulnerabilities. No scripts were extracted, but the link farm nature points to a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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://smidgel.ru/uplcv?utm_term=fiona+sit+married PDF link annotation
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/3052d92fc545c06d078f476d4383dd24/gitewusiwipigugo.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/4a0984599ec9c6fa0a76f646c0d9dd45/20377609313.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609979c12385d---54142813932.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/kizafokedufijelerisalanid.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/wofotajapigu.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1e01790b6c---88875738271.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a4e10fd9d---50399298498.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/kumukefolepinimu.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/43bf4c1b05e6bb15ca7001568cc7d121/8796752418.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/bimorovowirugolik.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb46e2c107c---66604170632.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/39iciajqaj5f5ven2uat3fqptf/62585665131.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/enutj7r77ulnde7kk3jarplifr/gabalusez.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6f9819d81e5068812058a7a02be7c9ef/jutewazowisapagex.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/76347787622.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609497d10856e---wafirulapi.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/tafox.pdfIn PDF document text
    • https://zegabilisim.com/calisma2/files/uploads/fitegibiguvikopi.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c68ef306d46---86487956832.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fba90ef118---mikapipukejakizutato.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/cmv345hpvff5uqv5jt3f4ul7gc/84135674412.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/28d9550662b562cff78b667effcc76ae/bifepivobinotupabakoji.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ce17e9ba6---vekojofagewake.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/3c72fb1524cd560f3c500ea7febc13a2/suwezofopulamit.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/b7876ef2e1ad1e4effd9920850aeba01/datofijenedukebal.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11527 10340 bytes
SHA-256: 9f8fd21fd67861bcd8cd97ca6fd379478e49dcffbad748805d9557fb0bbea29c
font_01_sfnt_off00012c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C69 27104 bytes
SHA-256: 25b40e77d3559d6696e4d8348dba31d982642f4624a0d3a96fe58f7b6db63fb9
font_02_sfnt_off00017796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17796 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00018fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FA8 19848 bytes
SHA-256: 0c3622c35e91a1b5e44b802ce405f3f8b72c0146e27235212ac53cb7ad9bd361

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