Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff2e7f27320ca2b…

MALICIOUS

PDF

87.4 KB Created: 2021-09-07 19:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: bd01e20720ec42bbdf5fdcb3f71125f6 SHA-1: 44c13d9ebb2e5515bb02ecaf6d10d775f3d7f2b4 SHA-256: 9ff2e7f27320ca2bc226f70f256f9ff88f9c2ef076095a4f418755548a32b37b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript and a large number of external URIs, many of which point to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to these external links, which are designed to lure users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pixomot.ru/uplcv?utm_term=dodge+dakota+2006+manual PDF link annotation
    • http://travellightnepal.com/userfiles/file/rebasodaf.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/r6uj8tgr6iqbgl36jop4920pq3/pezexijoronexilukav.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137285c55189---medomotepetis.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/20104354975.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/20719577519.pdfIn PDF document text
    • https://jnvhardoi.org/ckfinder/userfiles/files/jawawekifabamurunasinew.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/328697dce5cf1dd52db5400fc3ae365b/24186171716.pdfIn PDF document text
    • https://www.playitdirect.ca/ckfinder/uploadfiles/files/33193478079.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/8177361797.pdfIn PDF document text
    • https://gkscam.com/userfiles/file/wufejutixowikimuvi.pdfIn PDF document text
    • http://jogforbigt.com/clients/6/61/61f7a61d17da296148a50ccd59c4a139/File/wodazovaf.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/07jkji9846uj11gpvhcou5c0ea/58506910107.pdfIn PDF document text
    • http://headrepublic.pl/images/files/wetulax.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/12337d8037c2e4775fed94090b70b1f8/53462522627.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/pomemuwozoj.pdfIn PDF document text
    • http://zzweien.com/d/files/96512323395.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/35744218921.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/e991d6a0655bdbdbc3c8a883231e4e9a/23083851307.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/1177f86e57292ec3b34651c250bcc47b/tolesexago.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/4468ed007f94c33d46f2857d7a96220e/71708995027.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/jepikab.pdfIn PDF document text
    • http://congtydaihai.com/upload/files/50554148069.pdfIn PDF document text
    • http://vstarmp.cn/upload/files/20210612_204845.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/zagudojozupu.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_off0000ef18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF18 10832 bytes
SHA-256: 07c0f46d86d8c624b7a17e21327f18d3b773ebdfe2ec9b94d98a0e461527a0bb
font_01_sfnt_off000107ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFF 18180 bytes
SHA-256: 1ef4a64c790b9b1c0bd329e939abfa83e9ac899eb11d39dc83a28b0ecaa979e5

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