Malicious PDF — malware analysis report

Static analysis result for SHA-256 074916b2066dad39…

MALICIOUS

PDF

77.6 KB Created: 2021-09-05 10:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 38584ecdde1564f7ca035404dbf3cb2f SHA-1: e507fc4efecd66cbb08b5c8d20e5f5c7f87108bc SHA-256: 074916b2066dad39c7a3b4832834e1f16e4030132cf2c8c5a5d7254046f03811
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 as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting a phishing or SEO manipulation scheme. The presence of multiple compromised CMS upload links further indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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=types+of+animals+worksheets+kindergarten PDF link annotation
    • http://badaranquehablar.com/userfiles/files/lotopepuxavalox.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/mezalikitisowigojotop.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/94064e3fc8e7172e03cc09b4d08587ad/27866069463.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/bijowedezidetijaz.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/28850309107.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092011579b93---82163427680.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/togeraxozojufosabikamol.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/venoganenovomofufuzew.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/7441658451.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/karurudenogabexororel.pdfIn PDF document text
    • http://kassa.pl/userfiles/file/sosupugulelejofajeni.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9ee586f68---16246300747.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a6edcc792---buzububesurekizomisines.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/cae1817861a05220bd6018e66001434c/xogozigifuxinijolala.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/23041853456.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/tasakibuvolefunobew.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bd84811505b---wopodubemekavageruzofidat.pdfIn PDF document text
    • https://stancijanegrin.com/userfiles/file/80043071054.pdfIn PDF document text
    • http://beccaro.it/userfiles/files/1783978435.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/17901718261.pdfIn PDF document text
    • https://ikima.fr/uploads/file/gulifojenulorunosiwino.pdfIn PDF document text
    • http://winterwonderlandzundert.nl/uploadimages/files/zafigolot.pdfIn PDF document text
    • http://identik.hu/editor_up/15692810690.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d88177f39---79454495595.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_off0000c73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73B 17716 bytes
SHA-256: 16e45eea8086937eaa31c6865edf3a8f90431ea5c70e70218857e6ecfb2273ab
font_01_sfnt_off0000f518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF518 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2F 11200 bytes
SHA-256: d9e92dd95f85462dd064edcee7c864cf7b6c230f0f05dafcc1f27ba1a8a0fa8d

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