Malicious PDF — malware analysis report

Static analysis result for SHA-256 064620815119d85d…

MALICIOUS

PDF

90.0 KB Created: 2021-08-03 23:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b6fbcb92301b1452d3a75d4310aa5d07 SHA-1: c2da40cd8febb47d80c7380e3404d1d0e47a54a1 SHA-256: 064620815119d85d9242e8e6c4cd66131d5a8003cb6593e7fe1fb9915f9387b8
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://synerhu.ru/uplcv?utm_term=escape+from+tarkov+trial+promo+code PDF link annotation
    • http://travelshops.pl/userfiles/file/fekikomam.pdfIn PDF document text
    • http://familiehollander.nl/images/uploadedimages/file/vusolupazafimiz.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/bodokerovapobaso.pdfIn PDF document text
    • https://cplastik.com/data/cms/file/vugedulubexoligunozara.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096309947353---70518539835.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c3dddcaa3d3---93433641438.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/jamadefarutalulakewaxigus.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/71d8334c10070fa54681715653467bbe/faboseroputumol.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/gebexomezefeluba.pdfIn PDF document text
    • http://armanetti.com/images/51312389957.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/60555731904.pdfIn PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/cc2a3c45719c72c239cd6112943e049a/wumufu.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/bofikexumizotelojuwuzuju.pdfIn PDF document text
    • https://media-get.com/userfiles/files/tubuvafunaroxiwumufofutud.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a97a88b94e6fa31625794f1a3275f524/47210020778.pdfIn PDF document text
    • http://www.yeosung21.or.kr/ckfinder/userfiles/files/1626123061.pdfIn PDF document text
    • http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jepunodanivupenovuz.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a1364e697bf---51448125232.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/xajufize.pdfIn PDF document text
    • http://bc-arman.kz/ckfinder/userfiles/files/83097858887.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/5c557d1a69135469d62046cc0dc6ba8f/20370521720.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1607573fc58cf7---wopixezimo.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/eff596c5d7da87a42e010d500cc5588a/romunazoranekidoxo.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_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 18048 bytes
SHA-256: 4b4274a35db2a74e27d489a8d1f216447a91fdade903fd5a5b02393eb01ad509
font_01_sfnt_off00012898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12898 10820 bytes
SHA-256: 649eae5078a8a0518707ac18fffcc4da5d1381d96814d8234180d8face6b314d
font_02_sfnt_off0001419d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1419D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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