Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e0fbb1a8ca311e…

MALICIOUS

PDF

80.6 KB Created: 2021-09-15 00:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: be1933faf1df584add0466af66e22933 SHA-1: e5219673851bc188d071439312ba27a5aa2b5d7b SHA-256: 72e0fbb1a8ca311eabc976f473b70adc294307176149facd839dbc2a2dfaa23f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs and link farms pointing to various domains, including compromised WordPress sites and disposable hosting. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent. The primary lure appears to be a fake download for 'nba tv mod apk', suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://inwebjor.ru/uplcv?utm_term=nba+tv+mod+apk PDF link annotation
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ae127713b68f88f6b613cc687368cb4b/zomawofatesit.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/25799704061.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/37189523863.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/19464119368.pdfIn PDF document text
    • https://cylinder96.ru/admin/ckfinder/userfiles/files/27664190858.pdfIn PDF document text
    • https://candica.pl/ckfinder/userfiles/files/wutapogebujageb.pdfIn PDF document text
    • https://bluza-shop.ru/content/File/nikinavafoduveje.pdfIn PDF document text
    • https://cecprint.com/images/file/258126597.pdfIn PDF document text
    • https://smlstripedbass.com/home/rock/public_html/ckfinder/userfiles/files/52848820219.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/riroloba.pdfIn PDF document text
    • http://m3hotels.com/userfiles/file/bibosetotusojadafekemo.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/15591363198.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/71922201141.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/wazakalis.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/41d0dd3deb2d608ddf91c61bcf228c97/34561301386.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/161360db6645b8---nabunibedosetamujalusagiw.pdfIn PDF document text
    • http://aias.pnu.ac.th/ckfinder/userfiles/files/6228048859.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/91814831386.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/romepisod.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_off0000d70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 18424 bytes
SHA-256: 17b8f2b65a444c52611a18f51a71b3a872441348d4216e7dc6803df46b2cbc12
font_02_sfnt_off00011ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC1 10188 bytes
SHA-256: 01b552fc4f706f9578bafd8479850850bcff794276b275704bf058ce8b255188