Malicious PDF — malware analysis report

Static analysis result for SHA-256 f364cee660014763…

MALICIOUS

PDF

84.1 KB Created: 2021-09-04 17:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 91e8d99fbfc5aa6fb8de616d5ea8b914 SHA-1: 858846c0a38c05994e459d5731fb4aea7c87c7e1 SHA-256: f364cee66001476344b669527776429df2613af705eeb79bc9e2fdf036197bc0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm with numerous URLs, many hosted on compromised CMS uploads, suggesting a phishing or malicious redirection scheme. The presence of external URIs and link farms indicates an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://smidgel.ru/uplcv?utm_term=cara+setting+mikrotik+dengan+winbox+lengkap+pdf PDF link annotation
    • http://aotwresort.org/ckfinder/userfiles/files/60444446728.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b149bbe0ed8---falawudisisudis.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fe7dd33a3a9---zodufifisosivivuka.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dd1d84249---zevovuwexakufubovi.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/98586016989.pdfIn PDF document text
    • https://senhewood.com/d/files/68501079572.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c224bfcfce5---75142401163.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3121eb1f39---doniwibowes.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/7e436fab22d44281415fbdceaa90283a/jemilupemis.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608010ca88eb2---gajifudaberanosilek.pdfIn PDF document text
    • https://hse.tw/upload/file/72299990327.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/rexivasixivid.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/fowomilezidu.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160d78c1914f0b---70015942317.pdfIn PDF document text
    • https://satesayap.com/contents/files/zezurazuwonos.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/oi5mljfskk9n0r617ositgcsgn/nonuduzuwodiruxaxamojejik.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/jepidakawodanegojog.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ba59bd6479f---88147588245.pdfIn PDF document text
    • http://ttworld.hu/uploads/content_files/files/jesewavumiratukemofevafix.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/9993cb131d1371b35cdfc6c446062a39/20318354282.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a9cdedadb---balajorir.pdfIn PDF document text
    • https://maribon.net/app/webroot/files/userfiles/files/64288983417.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/0e5fd28692666a3640c1efd316532a99/zigugiduli.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_off0000e06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06D 18332 bytes
SHA-256: f67df90555da434e3e61df10575d48834cc61510ede30cc99239acb30da64337
font_01_sfnt_off00010f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F96 11292 bytes
SHA-256: ba6db8f7ce43dc3922cac6338f778198070c93f7887d2e3c20789a28b1028f47
font_02_sfnt_off000129c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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