Malicious PDF — malware analysis report

Static analysis result for SHA-256 6900aa65d9d8d882…

MALICIOUS

PDF

92.8 KB Created: 2021-07-07 03:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 817ecf9bd11376b88a51e76e06012d76 SHA-1: 73730c492002e0c04503082cf062fb2680172665 SHA-256: 6900aa65d9d8d882d50e921f0bb7a7f47fef4b064de6b95479b9202592254094
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to distribute malware or phish users. The presence of ML_NYX_PDF_MALICIOUS and ClamAV detections further supports its malicious nature. No scripts were extracted, but the overall structure and URL analysis indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://ketchas.ru/uplcv?utm_term=kinemaster+pro+free+download+for+pc PDF link annotation
    • https://matskaren.se/anvandarbilder/203/files/tapezopenapelisuxuti.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/bl021qkkqtep93rbflbpehcgl6/sekanasukumatuzuxojexezad.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16074838be08a6---tolafojozalujukivusok.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/96465b17b647616a3175682255921b4c/41988353976.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/jubanupu.pdfIn PDF document text
    • https://batikatravels.com/userfiles/file/84208704437.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/91d188cdf2e98ee2c06b239446f01b28/2359371044.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/kgsqbocfst3gh0jmp8c9u8e92n/gujimetulatorunamezepazib.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/adee938c09cb90ded751b6a96a8f77e0/nemapixomujibilutija.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/81391213405.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/rujawepewuberudavelosej.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/87450335085.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/jf1gk36dofta5ajta8lqlvp2d4/safanozemamupodojile.pdfIn PDF document text
    • http://stalmost.pl/userfiles/file/15187613873.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/gm5s04ev93bju7lh9ohr5gov8s/ratuxiranugetalokirujo.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/lobumefibimosezazixulixu.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/86170970313.pdfIn PDF document text
    • http://guitarenko.fr/img/files/wazivurejisazaluvu.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f7da927c0---bawasagisuvotosokarixe.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/kepidavukifefifusikak.pdfIn PDF document text
    • http://mbcasc.net/imgs/file/muxapefepe.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5196becb5---4885902991.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160853edfeeb17---35825469032.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb05ceebb3---wikez.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/86070818491.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/c6d48a91f23234d94cc010230309bfbe/rozonodudalupe.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_off0000fb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB01 26372 bytes
SHA-256: 62f4eaa73c5e198cb76a6b75d2555ba692070d68ca5daac05dde86e9070de888
font_01_sfnt_off00013276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13276 10860 bytes
SHA-256: 70f013ca59365b89c4fcbc5b5bafceabe7c073998e21eefc768da0035f7ef577
font_02_sfnt_off00014b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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