Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eaa54359276c864…

MALICIOUS

PDF

80.0 KB Created: 2021-09-11 05:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1482b9b81466fe1bd457461fb184fd85 SHA-1: e4691e43b7117949cadf08492a65f0a4b58f11cd SHA-256: 6eaa54359276c8644893701fb89f5b36bb67cba7ffbf43bfc9e63aa6e1643273
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm, suggesting a phishing or SEO abuse tactic. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://anninh247.info/upload/files/bopobeviz.pdf In PDF document text
    • http://biurod9.pl/public/userfiles/file/segogola.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/mugutalafijavasorafaf.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/lodoxodu.pdfIn PDF document text
    • http://www.prakashirrigation.com/uploads/fck/files/3866032549.pdfIn PDF document text
    • https://vargyasnekonyveles.hu/kepek/other/file/xijina.pdfIn PDF document text
    • http://dralituncer.com/userfiles/file/11507069672.pdfIn PDF document text
    • http://stnicholasway.com/userfiles/file/97499683493.pdfIn PDF document text
    • http://hasyo.net/files/file/jonumipelumejorexefif.pdfIn PDF document text
    • http://gpsputhuppally.com/userfiles/file/sivar.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/5fd60501c7d7e72a54dca0140a5f1b7c/danugixumisitovitotis.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161323a20e03f2---5533160034.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/kumez.pdfIn PDF document text
    • https://rwd.webseo.tw/upload/files/37110709314.pdfIn PDF document text
    • https://www.adoz.cz/ckfinder/userfiles/files/24795524964.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/potetitusupaseguv.pdfIn PDF document text
    • https://dammesliepas.lv/ckfinder/userfiles/files/36173182254.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/mamokevujo.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210904012258_1786606020.pdfIn PDF document text
    • https://semangkabiji.com/contents/files/55292661829.pdfIn PDF document text
    • http://gdlejia.com/uploadfile/files/20210906_111706.pdfIn PDF document text
    • http://maymaygiaydachidang.com/upload/files/11487010652.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=among+us+all+mods+apkPDF 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_off0000ce36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE648 20252 bytes
SHA-256: f8b302e70823d17c7478cf9880a154bce07c5fb5e9ee32c4d55f721bcf2201cb
font_02_sfnt_off00011b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8C 10488 bytes
SHA-256: 1ec0ca7cc951a8b2d50140ea3465901d8c3de831a0b5108476d1e5e6a1d22516

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