Malicious PDF — malware analysis report

Static analysis result for SHA-256 768d47150ee584b9…

MALICIOUS

PDF

82.7 KB Created: 2021-09-07 23:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 012decd6bf9ef7e389c6c39aee0f1c2c SHA-1: 12817a9c8eac6a5a839b643cf3622d6174e06674 SHA-256: 768d47150ee584b939d86044ab32ced40a51b1a70e1ac3feed4de390f9c32b04
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to obscure the final destination. Heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest this is a phishing or malware distribution lure. The ML classifier and ClamAV detection further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://abwingsbuffalo.com/uploads/files/56486068018.pdf In PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/dbb2f53dc2eed3a5fcc40a4a48ad187c/gemikazevef.pdfIn PDF document text
    • https://fortworthdental.net/cmsCart/upload/file/direxinurisomukuwodega.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b41721a2e13---52814912577.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/59428097019.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/wujazuw.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/mowerakemoguvajafevef.pdfPDF link annotation
    • https://soudurelausiere.ca/upload/editor/file/26844260936.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c20fffe24ba---gagefojojuvaletonafun.pdfIn PDF document text
    • http://thegioinoithatcamranh.com/media/ftp/file/bugazebuvetuwofiw.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160be6d9c3b002---jewilo.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e75b9a286---poson.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/94826513588.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/446f6f6ff5d088a731acb547f04f7508/mewumuwofavekasanuwuxo.pdfIn PDF document text
    • http://brenderup.ro/mm/file/71194372033.pdfIn PDF document text
    • http://www.hz-kontejnery.cz/ckfinder/userfiles/files/20343767020.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/3a022068b1dae30c9f85878fe45dadaf/givixafepuj.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/5c83adae746ee2ea94c779736e5163c2/sawugubajuwijegem.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/453a90e4c03f19c18e77faaaaa8d01fc/mozitagebidaxusememab.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/47409007411.pdfIn PDF document text
    • http://nppgursaraijhansi.in/ckfinder/userfiles/files/venodonoxijunuj.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/70905165044.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608a43a3e0e9e---tawotoxaxakodosotonogik.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/516d072e844b9b1c7b76de6bea32e17e/bikapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=appreciation+letter+for+internship+pdfPDF 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_off0000df0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0D 10696 bytes
SHA-256: 077d7fcffda162a3658445c7fb0e29fbcb404f1001683e3173ef0bf53a13a0df
font_01_sfnt_off0000f786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF786 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F98 17832 bytes
SHA-256: 1bcc4f8afcb35cc878faa17022594d87134a85d18dee1a414715f3676d509628

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