Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fac099112756758…

MALICIOUS

PDF

84.7 KB Created: 2021-09-07 17:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: c05e5db46159be1acb83e407ce0c5aa2 SHA-1: 9cdeeca8428ad886c8fc8689916f05b1636324df SHA-256: 8fac099112756758ca91fbb83ed2d363bbf9174036d025d058036fa0436ba1bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external URIs and is identified as a link farm, likely intended to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous URLs suggest it's designed to lure users to compromised or malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/uplcv?utm_term=white+sewing+machine+model+1455+manual PDF link annotation
    • https://mmszke.hu/files/file/44632738373.pdfIn PDF document text
    • https://drnanemilk.com/tctt/sites/aaa/file/19765951476.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093c9739c8cd---28881247167.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/18178316278.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ce5553456---93188569003.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/98fqb7u1f6sb6ggcqd53uq1ps6/pomitum.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6e5bf2626---ronuzexu.pdfIn PDF document text
    • http://kolasinprevoz.rs/slike/files/63612126541.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/99060716231.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4c41756f68---tiwosabivesi.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/mudilesunezevaretolawu.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e2e8246b9---wusobutelusadetifizati.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e1057e7fc---vuwajubuxoladoj.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/86957226635.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/41169771258.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/c0fmliv097ekgpvguo0u5l21ah/44683732429.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e09abc23e6---fowujixikaraxudazisojukir.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/vlq092e8r3autsp6b4a6qbhgcg/58885988786.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8786ed417---joparowenuvan.pdfIn PDF document text
    • http://drsuthichai.com/userfiles/files/fokadisiwoluvuv.pdfIn PDF document text
    • http://sieuthibongda.net/ckfinder/userfiles/files/lojegetinivafivadi.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b8451f981---44260704405.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_off0000e508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE508 11160 bytes
SHA-256: cc07c070d660777813b0f97be31b0856969285b94150c45012944a759f364b28
font_01_sfnt_off0000feed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000116ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116FF 17236 bytes
SHA-256: e3ea3d3709bf3a0e0d055adf3a740a15bf3635cd1ff3f1fbd85478ac208acf76

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