Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f0060eca95dec4…

MALICIOUS

PDF

90.3 KB Created: 2021-08-07 11:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7915e8c1e030b53dbd3f0d6917e831b3 SHA-1: b0091a9bd921702ce1c81c3e99ae6d5676eeb831 SHA-256: 79f0060eca95dec49e21a68b68587eaf32047c748069c3f960a686cbbfa9ea14
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many hosted on compromised CMS upload directories, indicating a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1a3867313a---92023653727.pdf In PDF document text
    • http://thanhlapcongtykiengiang.com/upload/ck/files/25479502924.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799d96a431a---nosaxem.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/96290314553.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/neneperabasuvakakatutavex.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf1d7d084c---vojaworisujovagewamovivam.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/kejewazatuzeruxugetisax.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210510085330.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160fddea5e7e1b---wuvibonozefodifasutefemo.pdfIn PDF document text
    • http://grapevinewinerytrail.com/clients/876125/File/vixufimanobukadebafomage.pdfIn PDF document text
    • https://procogs.com/FCKeditor/file/bulelukifaluvoxodobabire.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/vaneguromusego.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3a3f1a74b---66028982608.pdfIn PDF document text
    • http://www.polni.si/Images/files/42646532732.pdfIn PDF document text
    • http://ekorob.pl/userfiles/file/44315483768.pdfIn PDF document text
    • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/81613667445.pdfIn PDF document text
    • http://villa-margherita.biz/userfiles/files/76593011332.pdfIn PDF document text
    • https://livresdarts.com/ckfinder/userfiles/files/86544321789.pdfIn PDF document text
    • https://lionkingbali.com/uploads/file/gepesarome.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/64986a43d1e20665e6492398efc4c7cf/xazinede.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/2839894516.pdfIn PDF document text
    • http://www.siposferenc.hu/html/27366963171.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084061b571ad---visewatun.pdfIn PDF document text
    • https://www.sesc-am.com.br/Selecao/ckfinder/files/95422422853.pdfIn PDF document text
    • http://pizzeriadevita.it/userfiles/files/97510774667.pdfIn PDF document text
    • http://bioaec.com/userfiles/files/powofelenamafawu.pdfIn PDF document text
    • https://apizf.org/public/file/44786867459.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=libros+para+aprender+artes+marciales+mixtasPDF 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_off0000f80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001101e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101E 18696 bytes
SHA-256: a432b15a84ba1eaef88309092bdc7b58e71eabb694b0bece71dde0c51a24605c
font_02_sfnt_off00013f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F94 10876 bytes
SHA-256: c497881949355f413e27452c8e9e56ead33c7face35342776444168ec86c64a5

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