Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7feed300f347d7c…

MALICIOUS

PDF

92.7 KB Created: 2021-06-30 17:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 33181b16da0c0584c14359fae142656d SHA-1: da96e71cd08225532a58adfdf3da06cd44947609 SHA-256: e7feed300f347d7c31152292b2217f4c704594bbb0ee0257284e3ad37ca9cef6
164 Risk Score

Malware Insights

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

The sample contains embedded JavaScript, which is a common technique for executing malicious code within PDFs. It also features a link farm pointing to compromised WordPress sites, which host further PDF files. These elements strongly suggest a phishing or malware distribution campaign, where the initial PDF acts as a lure to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cc6cadc79b8---nevopomo.pdf In PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b6662150285---67506697700.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/c4e350e0219718f5dc058120fd9f685e/6359675090.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/514941c76db3c0dc2acc75cefa971750/97012647683.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/97684337491.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b82e6647a72cced787d09b873cd5f501/pexokoxesumonogaxired.pdfIn PDF document text
    • https://nguyenhungstone.com/uploads/image/files/58835246888.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/337778bb2de08131e86a5986ce15d947/jijagomosubafinozivoxo.pdfIn PDF document text
    • http://filatelianumismaticaumbra.it/userfiles/file/62977006046.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1620867764.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/co7lo41dnbp2dnq6b88re19a2k/zavugetal.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842b503424b---poxovanamotenelewevenapiw.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acefc55a4c7---92538119234.pdfIn PDF document text
    • http://thepnguyentran.vn/media/ftp/file/94433553824.pdfIn PDF document text
    • http://plafondchauffant.fr//img/user/file/xupova.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbfb88644d2---86428396279.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adce9b39141---11011198365.pdfIn PDF document text
    • https://pametnidom.hr/pametne_kuce/userfiles/file/84869610045.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607246b96aa62---27954773726.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b6dd91c599a---zawubofajilodixer.pdfIn PDF document text
    • http://wchs67.com/clients/f/fd/fd50fd9748f3592dabdfdad26f378f15/File/58415362379.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/87166672505.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086fe6b42f40---71029599926.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/gidonulopipot.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a84b2fd5e65---vutotovapuwope.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/2e77671983a2e2a2cacfed9249b80f08/83179351643.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=exercise+for+weight+loss+after+c+sectionPDF 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_off00010829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10829 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12040 10788 bytes
SHA-256: 7102bf241c67146497d2e2c6dae5e5475758a9e65bfc57ca761aab71ff04f5a5
font_02_sfnt_off00013920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13920 16948 bytes
SHA-256: eb2113c084754742e06cdd990288cb962b2470ddf8b77754eae4512bcae15b38

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