Malicious PDF — malware analysis report

Static analysis result for SHA-256 882cd0a024609574…

MALICIOUS

PDF

88.6 KB Created: 2021-09-05 16:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: daac368f9dd63a59d8f232d401a08649 SHA-1: a656d42d2aeb3325afc0fb25df39b9fa6f48eb77 SHA-256: 882cd0a024609574936feb1a3018b15da5192012704705e4189287c6e6520fd4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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 http://jeanthompson.nl/ckfinder/userfiles/files/vikixokixowixalokimubul.pdf In PDF document text
    • http://www.hzkontejnery.cz/ckfinder/userfiles/files/veliluxijosupakarat.pdfIn PDF document text
    • https://upbilbao.com/ckfinder/userfiles/files/wozoj.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a70d299df31---roweninuwepowujokus.pdfIn PDF document text
    • http://drxzhang.com/userfiles/file/10405086943.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a21b1746aec---8848590978.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/gernpgab9c5sh6lj21o507mcft/26355741910.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a442413c58---65371470736.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7aaef1751c---22326223947.pdfIn PDF document text
    • http://facyt.com.ar/ckfinder/userfiles/files/57674283316.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160912de644abd---20073430784.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/75220304234.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/cuvd29p07l9mtm10ke5jdmtdde/taninanawidojokaxezexe.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/ae9483c23c2127c63aad804b650c8a1d/titanefiberixowojogolal.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/69e7ead967d514ad24aefb863a1af318/17892303663.pdfIn PDF document text
    • https://pnlcoach.com/misc2/file/In PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d95d558485f179d4d066685dbc106d01/98359981355.pdfIn PDF document text
    • https://marljivo.hr/userfiles/file/redupibopodufadabago.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160affb653eeec---91431792766.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160eca0d97e86c---11047150500.pdfIn PDF document text
    • http://ngoinvest.com/uploads/ckfinder/files/4056372693.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/ffcd2d7dd87ed3caecd4ece2e6d2d750/23441295503.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/86837425929.pdfIn PDF document text
    • https://frontivo.ro/userfiles/file/rajapago.pdfIn PDF document text
    • https://hotelgaric.com/upload/datoteke/vunadimosemin.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/83756207697.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=ridurre+dimensioni+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_off0000f672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF672 10500 bytes
SHA-256: 65d07b8a97838d16c31f490cd3e9ba390de49fd6f68aca5f4ea42526b38f63f8
font_01_sfnt_off00010e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12653 17664 bytes
SHA-256: ce2aa3160ddac1b44a196fd8d792f44eaca96cd733e124723a8871c42b50c519

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