Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f7655266564eea…

MALICIOUS

PDF

87.5 KB Created: 2021-07-23 20:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5d67066dbb28c9bdb8b19b92f063c588 SHA-1: b2b83f616b82163e230b4bbc83a848d806bce8e5 SHA-256: 57f7655266564eea3606cea51d77cee63d93d004b1b2f8b1ecbcb773484865ee
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to trick users into downloading files. The presence of a 'download button' heuristic further supports this phishing lure. While no scripts were directly extracted, the overall structure and URL patterns are indicative of a malicious campaign aiming to distribute malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://inglewood1968.com/clients/68690/File/xugoluzazizekozojujisow.pdf In PDF document text
    • http://barksdalereunions.com/clients/869108/File/nedanoxupilomutu.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/87863174951.pdfIn PDF document text
    • http://hzjksj.com/images/upload/File/noruverigowaruje.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce46d2feff---jerif.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/llf5lrl0lje3j9k47m6tkl4s2g/94656470519.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/47c0e3c8656f6ec121ac2dab5e361f75/gufoxujitotafapifov.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160f059a6d7c37---sunaretaj.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/0d1349e95418c14a7361adc3161ab396/73070467743.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/86b3f6e55ca5c97560edc8a3c4d979bc/65557858784.pdfIn PDF document text
    • http://gewoongroen.eu/app/webroot/files/userfiles/files/6277325675.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/57032623981.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/nubozetaxowupumezi.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/m3l28pjtjm0n7bm9sftqrc3j17/jabarov.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/81c1be702c85a224910e93eb9ed2aa6c/marupigaxisegeredumoviv.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cac81b45f3---34234977844.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/8425c403296255b4b08cf5fb10bd4bc9/24439154585.pdfIn PDF document text
    • http://pcccmiennam.com/media/ftp/file/doxefitumewomuvej.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160715736aa759---84563107056.pdfIn PDF document text
    • https://xn--faade-mtal-p6a3a.ch/ckfinder/userfiles/files/rafazalomikasexa.pdfIn PDF document text
    • https://rumahbaruku.com/contents//files/davegobazalijabuketeve.pdfIn PDF document text
    • https://derechosenred.org/aym_image/files/97250309854.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=download+gta+5+unity+android+mod+apkPDF 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_off0000edcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DD 18508 bytes
SHA-256: f06fa6b61e8fe210e16c47856f580bdb8862cb880956e4a496e8f1880a789cdf
font_02_sfnt_off00013677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13677 10960 bytes
SHA-256: bb65567bda54a896bf82e911ecb2f210b44deff7472a76987f8517d36aeae8de

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