Malicious PDF — malware analysis report

Static analysis result for SHA-256 3402e24cb4e5f710…

MALICIOUS

PDF

85.2 KB Created: 2021-07-05 22:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 28efe661e4fa2f860c1d59beb7382f07 SHA-1: 2c41b4c7fe79a5deb339052d4f8f6aebddf056bd SHA-256: 3402e24cb4e5f710bf2c5aa86e3635800ec6885868db4bc8d1870eaa094c43b1
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document functions as a link farm, with numerous embedded URLs pointing to external sites, some of which are hosted on compromised WordPress installations. The primary attack pattern involves luring the user to click these links, potentially leading to further compromise or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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 http://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/zitazame.pdf
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/7rodio61eqpr9js9v42bu81ni5/16097472225.pdf
    • http://bearings-home.com/userfiles/file/88272343101.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c34e9282a3---28565607568.pdf
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/1f30a2a2e3a26b488f33a3050faf5996/tozawitikowut.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/9ceb0c15d65566cf59b08ca92430aa12/nazidipaxunaxokabexiwi.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/7q3hvdrvegmo5op5nnv1qsp9t0/63500286024.pdf
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/60c290e45f2e6b31d656903c6e33dfdd/pepisavonafiwas.pdf
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nazodolafogexolivikezekuk.pdf
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021060413052380554.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/4585bab884c46541bbda50cd8d871ed7/pinopijakokaxudif.pdf
    • http://nensi.si/upload/file/rivarunozujigas.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609480d7e29e1---11431435582.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/cge136vrm2m2gp1aso8kc3qihe/gigejik.pdf
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3cc42bd6c---poraxageto.pdf
    • http://ahlhy.com/uploads/file/281025085314.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/1c83e92f5c7c472a242bc78a3669524d/6388167318.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/08180170b9f870661704a84d8ff8a48e/74968128929.pdf
    • http://yorktownhs1987.com/clients/57482/File/10119498932.pdf
    • http://webhenevents.com/clients/868374/File/jibalaraxapavafim.pdf
    • http://webbuilders.com/files/file/gukagapubuxedutokafis.pdf
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/9ea431bd35d4f7764e7cdb1dbd2abd63/33512280937.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160849a5e1e774---87409101246.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7d35ec6ef---17332114920.pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609a380edc1a1---35157306428.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=we+are+forever+young+bts
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de55.bin
501c7c8de1c4ece5b1ab8b04c089f49fe31373da47ffa441a76330645a822f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 10664 bytes
font_01_sfnt_off0000f6ed.bin
15171638d69c9281a983de8a04f8d213e5ed86d33053034f6aa0dd130c4010d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6ED 1700 bytes
font_02_sfnt_off0000ff00.bin
8d8de0bcb38dab2265fd4a99bd161697fef8eae6224fedad851db2e69fc539ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 18128 bytes
font_03_sfnt_off00012f29.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F29 16792 bytes

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