Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e69eff7020d9e85…

MALICIOUS

PDF

96.2 KB Created: 2021-09-03 17:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fa26aa17499cdb67b84d1beb4b5a131b SHA-1: f1faafee257bfa2f5e7f8c5b838ecb334f55bddf SHA-256: 7e69eff7020d9e8538676b86dcc0a481b5c176b146c582a171126158c7976a1a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload storage, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://huntic.ru/uplcv?utm_term=vms+touring+700+hdx+gps+manual PDF link annotation
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607452eae2014---51753461505.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/nidawor.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/sixixuxowoposefil.pdfIn PDF document text
    • http://csc0731.com/userfiles/file/20210902023341_3wywcy.pdfIn PDF document text
    • http://rivieahk.com/clients/5/51/51325344bd1517f257d6959d5350918e/File/49115338475.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/tenudusawixoviweluji.pdfIn PDF document text
    • http://shannonlakeestates.org/fck_images/file/nagixapotuvex.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/26099342359.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sitedew.pdfIn PDF document text
    • http://granite1962.com/clients/869125/File/vovivor.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/xukiraf.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/f84119acb023412d56ce7b290fb128ce/kawuzosafujamose.pdfIn PDF document text
    • http://ciarajewellery.com/editor_upload/file/11745691647.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6d7153f90---vixurejuda.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b41eb3e147---24486140842.pdfIn PDF document text
    • http://m-s-g.ru/userfiles/files/54125583014.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/dd2d14b25b0d1d47badfb3904b218032/pizakokejifuxume.pdfIn PDF document text
    • https://apronorte.org.br/ckfinder/userfiles/files/jasederuwekijivos.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/2ee2f0424e745f830cd3fd478d9eb373/nofodulugun.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/74494723078.pdfIn PDF document text
    • http://ohxto.com/uploaded_files/userfiles/files/80380584070.pdfIn PDF document text
    • http://racecross.com/upload/edito_fckeditor/file/fafoxepowiwifug.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20210812_76C6030C884F23CD.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b2f32b452---fudupetixafijajajadivug.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/d4c686c8a3a3e52754e523269b6aa0b9/59544583634.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A28 11052 bytes
SHA-256: 49edd47d0265b21b112bcad7c69d5e939ac517196ed4522be4c0d47adf1bf492
font_01_sfnt_off00012382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12382 21204 bytes
SHA-256: dfa8013965ea0e207b59e37e98495fd91fdd169eb5b4b3eb6ea61aba04ca9218
font_02_sfnt_off00015b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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