Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead435ee26ff24c0…

MALICIOUS

PDF

68.5 KB Created: 2021-09-30 23:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 923c3055cb60da2939f6d11d4568abad SHA-1: 09d1e3d86c8e79d0c64476df5a909dc66cc5f5fc SHA-256: ead435ee26ff24c0f0ae173adb7fb79cdac8ad701741a7c8bb85141b9be38905
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure due to its image-heavy nature and embedded links. The document contains numerous URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content or download further payloads. The presence of external URIs and a link farm on disposable hosting further supports a phishing or credential harvesting attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crysiq.ru/uplcv?utm_term=side+by+side+english+book+1+pdf PDF link annotation
    • https://hgqq.hk/tony/churchofgod/ckfinder/userfiles/files/feporifigunudozowuj.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/78041082680.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/ganik.pdfIn PDF document text
    • http://salukool.ee/upload/userfiles/file/wawivop.pdfIn PDF document text
    • http://tsg-vaganovskoe.ru/ckfinder/userfiles/files/53776780034.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/52910967785.pdfIn PDF document text
    • https://mar3ol.com/Files/files/50741227311.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/baletefavu.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/b5ce5ef27ee146dd39fa1eaf0e52cb37/pategezifojawopek.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132fde3b5b95---dakisolubetar.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/cab302905820c2133d460bca64f6754d/nizokagozirelenuzepizik.pdfIn PDF document text
    • http://darangyi.com/userData/board/file/gevuniginabufopajeweze.pdfIn PDF document text
    • http://print-resource.co.uk/ckfinder/userfiles/files/95444533201.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents/files/bakatun.pdfIn PDF document text
    • https://learnrkb.jugalbandiresearch.com/ckfinder/userfiles/files/86927925218.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20210928094714820.pdfIn PDF document text
    • http://megalaserasia.com/upload///84813335631.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/r38cfg0k1tq81bl8eqa0t4foa0/7647198314.pdfIn PDF document text
    • http://st-communications.com/ckfinder/userfiles/files/rezabolugidakozos.pdfIn PDF document text
    • http://sage-chem.com/image/files/20210913_030317.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/161345bfa93417---gebujonemupoloduwipazo.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/51387855440.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/55524332965.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/nonaxovakevarojageleba.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_off0000afc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC7 14184 bytes
SHA-256: d27eebc25329f304496be9cd8de1c323a650c0d8eefa4d22cb9900f87eb6a667
font_01_sfnt_off0000d344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD344 10892 bytes
SHA-256: 32c35888bae5cc78135c8d238e7ffcdaae3ac385a32a111d19da90f67beee0ca
font_02_sfnt_off0000ebf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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