Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8790e02de0c377d…

MALICIOUS

PDF

82.4 KB Created: 2021-10-04 17:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d9ede0ed32522cd774ffafd001ca9f09 SHA-1: f89ea433ad398bd0ad9122e2631e5fe3df4c436d SHA-256: e8790e02de0c377d6f46abb284499dc0cb06b4b1b51acd7a3bf43a3da284f675
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to various domains, many of which are associated with compromised WordPress sites or disposable hosting. The ClamAV detection and heuristic firings indicate this is a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4037

Heuristics 6

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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=eye+jumping+meaning PDF link annotation
    • http://kaies.cn/upfiles/file/68766088189.pdfIn PDF document text
    • http://platcometals.com/images/file/18567079082.pdfIn PDF document text
    • http://eko-gospodarstwo.eu/files/file/buvarinutebe.pdfIn PDF document text
    • http://gartenbaukoeln.de/uploads/files/puzazafebujanemajeponuwov.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141487c020d2---jeluxifajamusi.pdfIn PDF document text
    • http://dxczx.com/ckfinder/userfiles/files/20210930_190844.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/70289852376.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16150392e4cb9a---dupitaw.pdfIn PDF document text
    • http://thuonghieutoancau.vn/uploads/files/zixidekorozasuxebefafige.pdfIn PDF document text
    • http://edituj.cz/res/file/biful.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf1cf61219---tefixoxenaxenorudux.pdfIn PDF document text
    • http://soosanfix.com/upload/fckeditor/file/12209812703.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614e2d321c689---12007314582.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/12989411556.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140bf94ae80e---vegubegumalegafipupujibo.pdfIn PDF document text
    • http://4226080.kad.tw/kads/ckfinder/userfiles/files/2979073748.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/0dr98e19bu6guc49l2cm2duk4i/6795880335.pdfIn PDF document text
    • https://trouver-une-ssii.com/img/pics/files/99505788227.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/20527954660.pdfIn PDF document text
    • http://zulaikhatextile.com/userfiles/files/63162762316.pdfIn PDF document text
    • http://paneldeconsos.com/userfiles/file/13635296647.pdfIn 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_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 10388 bytes
SHA-256: be916559318cb850c27bf38fd70ed1fea5905803388257ef370d8fe50e08cf89
font_01_sfnt_off0001011b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011B 18444 bytes
SHA-256: df7772cb3ed43e9a214c2af66806a452a25129176886685de67144f131406400
font_02_sfnt_off00012f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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