Malicious PDF — malware analysis report

Static analysis result for SHA-256 114f1eb89eb60e20…

MALICIOUS

PDF

75.2 KB Created: 2021-09-09 10:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9432e37ab142dc6208739c09572dfee4 SHA-1: dba6c2ca6bf8718539ec38c62440d9cab36f3d93 SHA-256: 114f1eb89eb60e204f648fda68514289f75fdcd931a89ccc3227f7dcb2770e6a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, indicating a malicious intent to redirect users. The ClamAV detection and ML classifier strongly suggest this is a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613389dd65748---tobujajipe.pdf In PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/nadisupaxez.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161376fc0ad671---lulazagotijexezigogadol.pdfIn PDF document text
    • https://pellevah.com/upload/files/gagajom.pdfIn PDF document text
    • https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/61608863996.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/gunakapufawonuzuwajefig.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4954a1ae7---78405194578.pdfIn PDF document text
    • https://sukhayurveda.in/userfiles/file/varorukawolarejo.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/12103335969.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/56075234349.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/65145794186.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/77919149379.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132d58035bb2---jojevudutod.pdfIn PDF document text
    • http://anchor-m.com/js/upload/files/86714299081.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/18972792630.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/26471253091.pdfIn PDF document text
    • https://yogaspotny.com/userfiles/file/14462637516.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/c6ec67cb837e00f6a473639046eba42b/xevimifo.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/a2dcae79643571b662c1fd381a647219/jagadakovuwesukuxo.pdfIn PDF document text
    • http://xn--2o2b17g32e8xisqq.com/userData/board/file/menulazebipukotuloxev.pdfIn PDF document text
    • http://vantaidongsaigon.com/uploads/files/zigatav.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/lojinezixikifexofeto.pdfIn PDF document text
    • http://alocainghien.com/uploads/userfiles/file/misuzaza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=his+butler+fluentPDF link annotation
    • https://b2cdemo.tickets.com/content/files/wiparimisodunatemexapas.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_off0000c5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ddfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFB 16812 bytes
SHA-256: 9714c7454b876f68dfdca879662258c9d4e206f52538ed9897d0e971493811d6
font_02_sfnt_off00010924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10924 10156 bytes
SHA-256: 207d1084f8cabcf609cc4e8eda2fe6247d9a90c366811906c8f1ac798c867dc2