Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b0f6e214c69f6d…

MALICIOUS

PDF

130.2 KB Created: 2021-09-21 19:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 422fb93b57a7ef2b8d2e853765995dac SHA-1: 1518bd68c6307cae526a0e7b1b8525a142a35b48 SHA-256: e0b0f6e214c69f6d84b6e1f1a0d828f3e297bc07f03325b2a2585e98da41de0f
164 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm on compromised CMS uploads and disposable hosting. Embedded JavaScript is present, suggesting potential for further malicious actions like redirection or payload delivery. The numerous external URLs point to a broad distribution or phishing effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://philabc.ru/uplcv?utm_term=best+mogul+master+combos PDF link annotation
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/29057266026.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/mixerugomidibizipozu.pdfIn PDF document text
    • http://mirai-kankyo.com/userfiles/files/fititigozonu.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/40468671542.pdfIn PDF document text
    • http://quesnelbusinessnetwork.ca/userfiles/file/kivivolowonesud.pdfIn PDF document text
    • https://togeltop.com/contents/files/sovimuxa.pdfIn PDF document text
    • http://koryosushi.com/uploads/files/89781681653.pdfIn PDF document text
    • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/16189448434.pdfIn PDF document text
    • http://tythb.cn/uploadfile/files/gikodabogovinevus.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-9-21/20210921075632157397.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/lujusirisajedomigexafuna.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161324dec0e1df---tekojaforirulogegala.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/09/08/toguvaza.pdfIn PDF document text
    • http://fra2ange.it/userfiles/files/gezabebuvebimipujepa.pdfIn PDF document text
    • http://tfforming.ru/d/files/30272467508.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/nimejomigutosuxugakela.pdfIn PDF document text
    • http://neoneophytou.com/ckfinder/userfiles/files/92145940908.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16145b94c480d2---lojekivojunusexirem.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/8ce278ef823fa6fcb80b700de163b612/bemidese.pdfIn PDF document text
    • https://4wheelchile.cl/admin/uploads/file/68784244409.pdfIn PDF document text
    • https://10kshot.com/customerinterview/ckfinder/userfiles/files/5082609423.pdfIn PDF document text
    • http://dongsimkindergarten.com/upload/files/jovamokogudeva.pdfIn PDF document text
    • https://combrooncom.com/contents/files/sosirubisakokevepej.pdfIn PDF document text
    • 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_off0001985a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1985A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B071 10668 bytes
SHA-256: 3e8c94509b00f647fcb15f53cdcc94354679c90b373cca1c86c0ebe669bfd034
font_02_sfnt_off0001c908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C908 19308 bytes
SHA-256: 6857f78279178cb02c4fb7dc68f3de6942e6be93bc3bb06fe69aae7c77938467

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