Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deba9cc641590df…

MALICIOUS

PDF

73.7 KB Created: 2021-09-08 21:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c909995c59657d5a02bd6a5f592a9e48 SHA-1: 3c56fc738141a1d94bd1e5c0289696523787f468 SHA-256: 0deba9cc641590df74950e53e0af374ef8caeb3e1b505895dbab84b6b33b0551
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress upload directories. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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 http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613508ac8309d---zisopovitenag.pdf In PDF document text
    • https://tunhuaduytan.com/upload/userfiles/files/ratizolatokolo.pdfIn PDF document text
    • http://aapltd.net/userfiles/file/wexomawajibobabi.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138eabf4578a---vemukerenamiriwi.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/nexupamuvajitibutejibiv.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/sozef.pdfIn PDF document text
    • http://hwayinn.com/image/files/20210907_110356.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/e8cl6dik46l1aceu591ger4nu9/41633065614.pdfIn PDF document text
    • http://myphamnanyno.com/luutru/files/20213857993.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1630785953.pdfIn PDF document text
    • http://bjerkelunden.org/content/files/userfiles/file///29441986955.pdfIn PDF document text
    • http://ausafe.net/images/art/files/11751283106.pdfIn PDF document text
    • https://toliveinchristjesus.ceosale.catholic.edu.au/application/third_party/ckfinder/userfiles/files/32714662605.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613685c9eed08---6460506060.pdfIn PDF document text
    • http://erbaytag.com/resimler/files/koziva.pdfIn PDF document text
    • http://sincaremedicaltour.com/js/upload/21344362553.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/delarodozagatokewugubaza.pdfIn PDF document text
    • https://linkevicius.com/upload/galery/file/xedebirugupixu.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/wagowowibitenabu.pdfIn PDF document text
    • https://officialbacknumber.org/editor_up/jajidolisevib.pdfIn PDF document text
    • https://bibliotheque-des-arts.com/ckfinder/userfiles/files/72223717893.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/wobezet.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/lojugegodataxuru.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/77203561469.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/73428826639.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/0dd449e2660dab47635fd674215e605e/safewafetujovolawerutuxug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=clasificaci%C3%B3n+del+reino+protista+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_off0000bb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB6B 17064 bytes
SHA-256: d57838caabb3de941270abc9b0c622119f3469278c83b89d27a90e03d3856d3d
font_01_sfnt_off0000e607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE607 10780 bytes
SHA-256: 6562137efaf211289d840094d8512e9ce779e57ab1d986ae75ce721246ba6e73
font_02_sfnt_off0000feb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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