Malicious PDF — malware analysis report

Static analysis result for SHA-256 949041f692c628dd…

MALICIOUS

PDF

75.9 KB Created: 2021-09-21 01:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 53727b1936cbcfab0ac7781c5bd466e9 SHA-1: 00f5ad86c5cdf5e626c878390baa1c9737a81a50 SHA-256: 949041f692c628dd66180da578267d92d4fe5a04de60294dc54011f9dcffb38b
146 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file likely serves as a lure to redirect users to potentially harmful websites, as evidenced by the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://cructi.ru/uplcv?utm_term=indian+idol+season+5+winner PDF link annotation
    • http://urgentcarepb.net/userfiles/file/67644423420.pdfIn PDF document text
    • http://hzeiger.com/userfiles/file/wizapoda.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/xewefotutamawo.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/zipoxokevaf.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/zonufudikilojadepubaxo.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/luteg.pdfIn PDF document text
    • https://dongciao.com/uploads/files/202109050103451653.pdfIn PDF document text
    • http://biafrapol.pl/pliki/file/bugemezekitiko.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1612f61a509b9c---kotovuwokiwoxejimu.pdfPDF link annotation
    • http://leprofit.ee/cmsfile/contentfiles/zewaluwaxigusumosuvi.pdfIn PDF document text
    • http://arabstina.com/ckfinder/userfiles/files/75721546901.pdfIn PDF document text
    • https://anna-bel.com/app/webroot/files/userfiles/files/lukonosero.pdfIn PDF document text
    • http://iscelenie.info/files/file/73848436570.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/fupegekuxi.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/laxipubanumebofewok.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/q6bc7t9eb1ou7caos3oc3vovl9/61365906447.pdfIn PDF document text
    • http://zxpgw.com/userfiles/file/97163721607.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/41813896799.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/a2sffnmdkdt5o8cj736k361536/wepal.pdfIn PDF document text
    • http://bamboomfi.com/htdocs/cljr/data/files/97323358330.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/94242209029.pdfIn PDF document text
    • http://elektrostroy.kz/ckfinder/userfiles/files/rakugimirutonuf.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_off0000c2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2BF 10316 bytes
SHA-256: 6962adbdedc7b7ef90070c25eddb7e31212fc4453d4374537b05c23a02028793
font_01_sfnt_off0000da27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA27 18456 bytes
SHA-256: ef4e2a8ac03286cf2abf188f023eb5fce312e35735ad5e8e91961a1a8efab59e
font_02_sfnt_off00010a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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