Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fb49687f323fd3…

MALICIOUS

PDF

74.4 KB Created: 2021-09-17 22:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: fb61fa4abc4f555e18699789df04b9b8 SHA-1: 2a010bf9f03e71a1a79eba96402c63c97d76a44c SHA-256: 30fb49687f323fd3476f9f9c91b86fbda958dcff760e5d5f1234279d8ed5a919
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs pointing to disposable hosting and compromised CMS upload storage, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://archism.ru/uplcv?utm_term=just+move+your+body+listen+to+the+music PDF link annotation
    • http://transbur.ru/admin/ckfinder/userfiles/files/56892850259.pdfIn PDF document text
    • http://betheaskssd.com/flash/betheaskssd.com/file/zagenumazenapelukoruru.pdfIn PDF document text
    • http://4els.ru/uploads/images/files/60410416842.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef9ca3c57c---gezukekado.pdfIn PDF document text
    • http://vibrator4you.cz/UserFiles/File/99091296628.pdfIn PDF document text
    • http://fusheng-vietnam.vn/admin/webroot/upload/image/files/fupelagejapon.pdfIn PDF document text
    • https://www.htlexpress.com/ckfinder/userfiles/files/lojudasizu.pdfIn PDF document text
    • http://thuonghieutoancau.vn/uploads/files/tefupugapolewu.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/88668755508.pdfIn PDF document text
    • http://tprcindia.com/ckeditor/ckfinder/userfiles/files/pakokorowo.pdfIn PDF document text
    • http://alrabbanoilandgas.com/file/files/32421280785.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613b245f5ddbe---86080588302.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/kufivekimapukizow.pdfIn PDF document text
    • http://er-trans.com/img/produkty/files/43104243222.pdfIn PDF document text
    • http://pegasomeeting.medcoast.net/ckfinder/userfiles/files/74563344506.pdfIn PDF document text
    • http://gardena.crazyrockinsushi.com/uploads/files/xizebezi.pdfIn PDF document text
    • http://ap116.ru/userfiles/file/podivodejogibazi.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/gabimusanenafajarala.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/xelegosetik.pdfIn PDF document text
    • http://adec-interiors.net/Uploads/file/60883859033.pdfIn PDF document text
    • http://otpetye.com/images/shared/file/6137422079.pdfIn PDF document text
    • https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/73874019274.pdfIn PDF document text
    • https://megashina24.ru/files/files/napubijivamidofinusoko.pdfIn PDF document text
    • https://bonekarusa.com/contents/files/zoxodilemewetatukoludaje.pdfIn PDF document text
    • https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/nejujukas.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161448ec23aecc---wirixawofof.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_off0000be0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0C 17176 bytes
SHA-256: 05177367b9891b97a72a093495feea449f3c8bd7aefb0a344b5f01fbf470db7e
font_01_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10292 10884 bytes
SHA-256: b13fe5f76e3d7e94235d20d296cd6bcbfb06e0bb9d32064bc1d35cfc4e219b68

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