Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ce6f41e1e23da6…

MALICIOUS

PDF

85.0 KB Created: 2021-09-15 10:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 3f111200c69aaca3fa47e6b229fee09e SHA-1: bdba32624d02eb341d240fb5cd3ffa37add791a0 SHA-256: 62ce6f41e1e23da62ed3e7f1c19da3d4a544b4872434c5911ed91cf547224e29
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains embedded JavaScript and numerous external links, many of which point to compromised CMS upload directories or disposable hosting. The presence of a 'download button' heuristic further suggests a lure to download malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=internet+download+manager+latest+version+2020+crack PDF link annotation
    • http://maimungkorn.com/UserFiles/file/70473863222.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/dugox.pdfIn PDF document text
    • http://guides2alpes.org/uploads/file/daxijasele.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139795d2c835---83558648650.pdfIn PDF document text
    • http://ternovykh.ru/content/file/82205314948.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/nidewunokewix.pdfIn PDF document text
    • https://wmu24.ru/media/file/zoxoxafometuluwatemufu.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb19eaf66d---noses.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16141287851520---gudufuta.pdfIn PDF document text
    • http://veterinariacasettamattei.it/userfiles/files/37278318314.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/42231762633.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/fulekusurimawena.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/35135057353.pdfIn PDF document text
    • https://windscrm.net/files/file/21824016918.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/82628793223.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/188160841.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366d6dec20c---tekexokonepidemarifuravof.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/001bd2c14a5e6dfa3598890138e2a363/12905364439.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15783672665.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b429182cfc---tozigevol.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/28496225673.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/05fa4fa73c16d43b1a3c7fe319f3e78c/58354103377.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_off0000e73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 17400 bytes
SHA-256: ba34e49906f3a83bc41c4a7f3465ba1d64ca7cf2f621ea0e2544afa1f3018f08
font_01_sfnt_off0001146a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146A 11148 bytes
SHA-256: 14e6fb99ebb42e0bc6a00c1f92a0e200a5149b4aa6b9f894ffb37e5d588085e9
font_02_sfnt_off00012e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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