Malicious PDF — malware analysis report

Static analysis result for SHA-256 002eb33e82c810ac…

MALICIOUS

PDF

73.0 KB Created: 2021-09-01 10:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b1bffd17c0eefe1e584cd8bdde137d0d SHA-1: 6c4e3ac2a2a9a30791340326c9c48b1273dd3d6c SHA-256: 002eb33e82c810acc392d6353c4be6f0d64f290da013c9b4ceacbf0cd5ff5ece
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=nouns+that+start+with+m+to+describe+a+person PDF link annotation
    • https://eghamatyab.com/basefile/bainbookcom/files/sirurobijiza.pdfIn PDF document text
    • https://sce.tw/uploads/files/60b597af8ef70.pdfIn PDF document text
    • http://laboratorioshamalab.com/userfiles/file/vuwawadikibinalabeloroker.pdfIn PDF document text
    • https://cplastik.net/data/cms/file/zavegigotale.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/9d86adcbb534d115d7d9f0681247dfa2/94385458550.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1e4360760---xetozanoguvebivasezuberi.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a365311e4e4---dixepinunemigid.pdfIn PDF document text
    • https://eminesenlikoglu.org/resimler/files/78845556004.pdfIn PDF document text
    • http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/98189201772.pdfIn PDF document text
    • https://zoorichi.com/temp/fckeditor/file/tizalabiduwupovaga.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/90cf183dde34dbe9b4b40546126f016a/54614335104.pdfIn PDF document text
    • https://agencement-menuiserie-var.fr/stockages/files/28142155142.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/ziramiratapawuturafo.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16073b95611eab---59135148423.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/14444068699.pdfIn PDF document text
    • https://amblamy.ee/upload/file/xawoxiganoxawalonupeva.pdfIn PDF document text
    • http://denge.aero/upload/files/fosutijifakoluzumizenul.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/telimerewarevol.pdfIn PDF document text
    • https://fidelishospice.com/ckfinder/userfiles/files/vazujikitafomapupupiduj.pdfIn PDF document text
    • https://csodamalom.hu/files/files/18153671099.pdfIn PDF document text
    • http://cutyoursupport.com/userfiles/file/galeneralalojajitaweti.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/9dc891f62196e6ec269f7654caceab7e/minetawutaduriruv.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160b28591594e4---fekilixosogikan.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160abdefad421d---xadinarenirimujamakur.pdfIn PDF document text
    • http://terezszilvia.com/images/uploaded/file/94713641825.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_off0000bdba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDBA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CC 15556 bytes
SHA-256: c7a2c1bfef03988154ac69fe243766df19e2f165a87610dbda4f2f5a28011895
font_02_sfnt_off0000fd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD30 11036 bytes
SHA-256: 64750487f629bbc480e0bef9845bc4515b88d614064cf883f79020721a52b5bc