Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1a4ac1216297f3…

MALICIOUS

PDF

139.1 KB Created: 2021-07-06 06:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e694e565e95846c010d15bfc8a5ea59c SHA-1: 46026ab5326f36975a11bab15cd54fbeb37605fd SHA-256: dd1a4ac1216297f36901ad2f268dc356986d3b7de576cde97eb066fa8c1da8a5
164 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple PDF files hosted on various domains, many of which appear to be compromised WordPress sites or disposable hosting. The presence of a 'download button' heuristic further suggests a lure to trick users into downloading the embedded malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/ffd498ed28002846fa8a7b39f6c610d2/pamajirefefitejiw.pdf In PDF document text
    • http://balone.net/_upload/file///gidovomaribekoma.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/xaxego.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/baxisepuguku.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/wimazeb.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609abfec8eb12---84474140018.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/pukenuladarekitopomo.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/0m0nrjdoj5fjfoht9cbvb1e4nh/jokiruvagaxejanum.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0cdba5cb0---63306330282.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/473be9893baac9c8c4ffabc5c0e9fce6/7665810609.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/62040027793.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607890fdb74cb---suzutikelugotoxapugeka.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a716e4392d1---biwiposamu.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/14527934803.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6e4473050---25535552232.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/aba5918ad0020110ac4494074a4b4bed/46072242481.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/8vl465cf4de6mi031er1m0tg38/bonalejivomuxi.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16071345e69903---20073585941.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609d43f4197ba---defixurikejuv.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/467a89a3a0a95261ddf6d99a67831a04/58841713456.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160bf134ee26c7---kaxemelimiwisadonego.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e781593076---52028147557.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c5f596d163---3497032545.pdfIn PDF document text
    • http://synowka.pl/galeria/file/50305165359.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=o+level+2014+english+paper+2+answersPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B869 19992 bytes
SHA-256: 5ca903809ac8aa3398d3e3320a14c5aca72d3ad43920b3bf200d1982efd226b9
font_01_sfnt_off0001ed4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED4A 10860 bytes
SHA-256: 914f1671433bb8668a046527b746f7d0077c827e3688682b25f4615298fd9ad5
font_02_sfnt_off00020681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20681 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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