Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1994eb1424f915…

MALICIOUS

PDF

99.4 KB Created: 2021-08-11 19:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e513306c47c770c961d8e1f72d8636be SHA-1: 801b4fe75e82689a903eff83169c14143501d027 SHA-256: ee1994eb1424f915d962fde4b5910b905141d6d85caa91c4f2aa539da89c3448
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a link farm with numerous URLs pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to phishing or malware distribution sites. The presence of embedded URLs and the nature of the heuristics strongly suggest the document is designed to exploit users through malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://pistant.ru/uplcv?utm_term=how+to+know+if+i%27m+transgender+ftm PDF link annotation
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210623170213.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/4aa6625b6555cefc13cb42b25696a490/47922614095.pdfIn PDF document text
    • https://rpitrade.com/ckfinder/userfiles/files/27920689616.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc200d2983---53754652847.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b7339561cda---ravokolofofumanigixose.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739461ed980---bubaguluzoluda.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/kalupipunexogipodejun.pdfIn PDF document text
    • https://examonline.org/examonline/userfiles/file/waxakerupiz.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/gepuvulunobigut.pdfIn PDF document text
    • http://2m-m.eu/userfiles/files/94892663772.pdfIn PDF document text
    • https://brod-plovdiv.com/images/pedomikodaxupavaju.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/rinimuzuxonizote.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d05f692e7---46107597580.pdfIn PDF document text
    • https://mmoxx.mn/userfiles/files/dogulozefaleragazixibo.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/fikobunalusesovuwiwovami.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/69930277174.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e55ba68964---66871558887.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/72800896597.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/e26omfqbki2k9ieuqager7nrs1/41984632501.pdfIn PDF document text
    • http://toyotarent.kr/FileData/ckfinder/files/20210529_E403D35C373DCE66.pdfIn PDF document text
    • http://skia22.ru/pic/file/86803046605.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/a63abfdc5230f0878e6adefd7d8d9f09/12801681458.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/81sc5miktfsi7d52gvu3t0p25b/zifetugoxixeluritoj.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/34100972447.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/mamusotakogezazoperoneg.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_off00012149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12149 17456 bytes
SHA-256: 705836cf93861d2221e112ca121e1963bdeb77b96555bc676426a3a272bad237
font_01_sfnt_off00014ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ECF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000166e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166E6 10856 bytes
SHA-256: b3467c7100d7db00ff9d74d92a3d4f6ad15929969080478cfa8d6d393be0f452

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