Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92d622a75973b2c…

MALICIOUS

PDF

85.4 KB Created: 2021-06-28 02:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a6b157477ad09a5321497a08016cc2a8 SHA-1: a9f3355c52136b3a4ed4766601738fb0d8810f3f SHA-256: d92d622a75973b2c95a03911bd65f277d598bf72991326a04b416ea81dfcdfa7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest an attempt to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/p2ccnsosraakr4v1ek231lsufg/piwes.pdf In PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/4381uqls2dqt690c0m5nq1vj73/naxebofivuzijodofovufidu.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f80c2a57e---wogidudarifasetefowuxuvar.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/c60b31381e034d6698b2f2f0d3f3c664/vetikimewazetekinexemate.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ham4dbadujvnp69t8p6dm1ivq1/90423748138.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/nujukebefajatilaxobil.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/69980438231.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/wisurorakitajasifa.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/lm5s5qc9ob9mej19p05fsgqnvd/dezevegodoxawapinumivedam.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a3229be482e---19065671783.pdfIn PDF document text
    • https://arabacioyunlar.com/calisma2/files/uploads/3300310071.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd66c208c4---zoberudomuwu.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/6b63c504c84ad88e6c502008c30fce87/fetegejepovifawukale.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084bccd17114---13682798095.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/29990875919.pdfIn PDF document text
    • http://ashioke.com/images/library/File/rowozaxapujubupukogitaw.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/553271323.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d99fa7af23f2b55a380df6db77485eeb/24080297775.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/aba8b7ced4aea4af217ed6bf902f7257/46621577866.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080eba75dca6---83104952677.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/26052193319.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d02d62d96a---rajapoxekunuganeriveleze.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/eee228d4d8155bc73f783c94f8271623/39543882873.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=outlook+mail+convert+to+pdfPDF 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_off0000e9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E7 17268 bytes
SHA-256: bdb94dcfe9ba922beb6cee91fb3c9ecdeaa2795693816043acf8d4ed4348a3c0
font_01_sfnt_off00011758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11758 10896 bytes
SHA-256: a24fb8810b85f57370dac510e5aa136dad0fdf62582669143380b02c79ee5ee5
font_02_sfnt_off00013093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13093 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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