Malicious PDF — malware analysis report

Static analysis result for SHA-256 76625f15ad541060…

MALICIOUS

PDF

77.1 KB Created: 2021-09-19 23:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 607b24c10b03ca610d43fc6be996d1c6 SHA-1: 99a8bfdff09f1502b696275d6f2bb7889dd4cbe8 SHA-256: 76625f15ad5410609423989e6b023d5a88ead8be833b05fe67f07f0afa533e7f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs, many of which point to compromised websites or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146e0f40e42c---5425072042.pdf In PDF document text
    • https://derya.afmiletisimajansi.info/resimler/files/58577421086.pdfIn PDF document text
    • http://xn--80aguejfegacgj0ad.xn--p1ai/pict/file/15493926283.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/js8glhjteglufoumrg5n9taqo5/60331927751.pdfIn PDF document text
    • http://bephoangdung.vn/uploads/ckfinder/files/67831177079.pdfIn PDF document text
    • http://partnercable.com/files/55746390392.pdfIn PDF document text
    • https://propiedades.net/ckfinder/userfiles/files/nubigofovigokexufujitovi.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/nasagozetibokabo.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/tijowalevorugisebugupo.pdfIn PDF document text
    • https://ccaquebec.com/userupload/files/bujonalabami.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/wogivuviwijosiz.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/o92rlg3590qj4gmhs5110cdsh6/mokusezuwaretujixozolu.pdfIn PDF document text
    • http://kfoodntea.com/dataroom/file/radomeniwege.pdfIn PDF document text
    • https://brazilairporttransfers.com/ckfinder/userfiles/files/8752174008.pdfIn PDF document text
    • http://sinocelltech.com/filespath/files/20210909201414.pdfIn PDF document text
    • https://rainbowfurnitures.com/files/files/72089850237.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/34472347158.pdfIn PDF document text
    • http://alatasfilms.gr/ILC/img/file/romawikusobuvo.pdfIn PDF document text
    • http://ldkxzzs.com/images/userfiles/file/40517296785.pdfIn PDF document text
    • https://consultemergingmarkets.cubsindia.com/files/15506509508.pdfIn PDF document text
    • http://e-menu.hu/editor_up/losumajixaruf.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/nobawonigenajunanadobute.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/1997c3e2d5c0e6101e6fe9064acb9275/bakexopevowuwafinemuwigiw.pdfIn PDF document text
    • http://awfiowv.love-mrt.com/upload/files/zalek.pdfIn PDF document text
    • http://daieimotors.com/js/upload/files/74794162994.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=can+you+find+deleted+text+messages+on+androidPDF 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_off0000c845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC845 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05C 11044 bytes
SHA-256: 133659f6bac44f1aa29ab7e11e4bb3dde4c2628b5a8d0a6126d79eacb2abd38f
font_02_sfnt_off0000f9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EC 17400 bytes
SHA-256: 68f8b3e79f0cfbe3d4213c77a4ee60f7f0e66f27bfe86fca18cffd09233b76e0

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