Malicious PDF — malware analysis report

Static analysis result for SHA-256 202ce27a97a0d373…

MALICIOUS

PDF

79.1 KB Created: 2021-08-28 12:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: d9ae00f5e7c6f581c3aded7359731d70 SHA-1: deba69ebd549889503970d95b1449c13a847c050 SHA-256: 202ce27a97a0d37320e05bbc18cc21c2abcf98320e6a5677343d2db254eedc98
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The presence of embedded URLs suggests the document is designed to redirect users to malicious sites, likely as part of a phishing campaign or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://ketchas.ru/uplcv?utm_term=gooseberry+and+blackcurrant+crumble PDF link annotation
    • http://ppfi-online.com/userfiles/file/47620708623.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/197cqneqar4d41om30gje5tkf3/sifivetaboboladivudop.pdfIn PDF document text
    • http://hoanggiaphatland.com/uploads/image/files/14380815641.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/040951137260.pdfIn PDF document text
    • http://re-view.online/fckFiles/file/4303299626.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd030b8c79---29018075547.pdfIn PDF document text
    • http://sam-global.info/files/file/18850587486.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/nofataladuro.pdfIn PDF document text
    • http://mudrkanuch.sk/editor_uploads/system/files/42727385388.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c199e9e145e---xelinovixesakoxusibowof.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/1s5bitethmu6tdt2modil2t64q/dogapulimaxejanut.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/losuxumowifimenuzutineku.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/fesutokujiji.pdfIn PDF document text
    • http://becskeicsodajo.hu/admin/fck_upload/file/lulurixo.pdfIn PDF document text
    • http://paitoonbox.com/userfiles/files/dejopib.pdfIn PDF document text
    • http://netmode.net/app/webroot/uploads/files/radopuvomekuzopujumile.pdfIn PDF document text
    • http://liccuza.ro/stiri_files/file/18906528917.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b53a48667e---vaxopaj.pdfIn PDF document text
    • http://schokobrunnen.com/idata/17314715034.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7146d20998---derofuvisamebinafu.pdfIn PDF document text
    • https://giridhareye.org/ckfinder/userfiles/files/nugozenotizuwajopedexop.pdfIn PDF document text
    • http://milwaukee.center/userfiles/file/83696488187.pdfIn PDF document text
    • https://sieuthimaycafe.vn/uploads/file/88403602066.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdabc5947fd---62189007638.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_off0000d02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 10924 bytes
SHA-256: f827d6de1e2001f59583f304a22bac1640ab4ca03e021c89412081da4bc68ec4
font_02_sfnt_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 17380 bytes
SHA-256: 44ae1c77cb8abfb04674473f0d1666784498362f14cd6fbeae13c90c500ba4fd

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