Malicious PDF — malware analysis report

Static analysis result for SHA-256 30300122d7d98f29…

MALICIOUS

PDF

81.5 KB Created: 2021-09-18 18:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 49362c391f9a38931e50c9fe953ca3d2 SHA-1: 2d8ae941811a04ed168ad54dfc761bc6f240324e SHA-256: 30300122d7d98f29fa6c2781d96d1deca9fdcd8eb036221b7b8aeef5be3ef5de
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous links to external domains, many of which are identified as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The presence of multiple unknown URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312ac15f5db---jejuwinuzisosise.pdf In PDF document text
    • https://energiadirect.pl/application/resources/ckfinder/userfiles/files/rewamavo.pdfIn PDF document text
    • http://quangcaosmsgiare.com/media/ftp/file/fifawapute.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613a642f922ea---maxuvamotatatuwuruwekapa.pdfIn PDF document text
    • http://greenflameenergy.com/userfiles/file/69660012731.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/julawijip.pdfIn PDF document text
    • http://expertsystemgroup.com/file_media/file_image/file/foxosinaro.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/53419688853.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/87795586347.pdfIn PDF document text
    • https://avukatwebsitesi.trakyasoft.com/upload/files/murajukelovo.pdfIn PDF document text
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/27703695667.pdfIn PDF document text
    • http://ateliergermain.net/sites/default/files/file/vozinepubutogelivofopupit.pdfIn PDF document text
    • http://nakamurasangyou.jp/app/webroot/uploads/files/xewipobi.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/kuzuk.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/50070911131.pdfIn PDF document text
    • https://mashura.co/userfiles/files/95774372815.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/8023983261.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/siwisimanafe.pdfIn PDF document text
    • https://ssmavidiyar.com/public/content-images/files/juvevo.pdfIn PDF document text
    • http://fs-select.com/images/blog/file/77755983699.pdfIn PDF document text
    • https://doctornhospital.com/banglanews24/editorsfiles/files/87424132149.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/36779259672.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/defaxekezilawolabevi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+go+to+call+settings+on+androidPDF link annotation
    • 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_off0000d718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD718 18752 bytes
SHA-256: ef2b819c662e978b7f157106f9784de157ea825d390e9beb5f03f5c9dc768a0d
font_01_sfnt_off00010809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10809 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12020 10624 bytes
SHA-256: 41dbfe10058205b41531f79ffd9def77bb8224518be54f702f582ed55c6cbe97