Malicious PDF — malware analysis report

Static analysis result for SHA-256 2addb3ee12df2fd5…

MALICIOUS

PDF

71.6 KB Created: 2021-09-26 08:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 007743a4308dd078a719332b7fb63663 SHA-1: 676583d5da492f163904e6bbbac0a4b2faa1efe7 SHA-256: 2addb3ee12df2fd59dbf1be784750c745bb34e4afc1d4f67c873762de7cf6413
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 https://wastran.ru/uplcv?utm_term=marvel+strike+force+android+to+ios PDF link annotation
    • http://banglenhospital.com/UserFiles/File/13267529033.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/48352354140.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/ed68f68bcfe8af57805a5dbf50104dc7/11477796146.pdfIn PDF document text
    • https://usgcambodia.com/userfiles/file/28169005373.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/bejoxulosopazoziwituzorat.pdfIn PDF document text
    • http://pressvaluation.net/FCKeditor/editor/filemanager/connectors/userfiles/file/43736708855.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/8a9e504d8f6f5505a5b5583d4a55517e/87053951008.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/12164783010.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613cab2b33fd0---biropiwo.pdfIn PDF document text
    • https://estudiowebcolombia.com/ckfinder/userfiles/files/janagabipoxebeligeriko.pdfIn PDF document text
    • http://belstroyiz.ru/img/file/fajomom.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/50469271592.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/mifofeban.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/443616b2f79fc56fe46bbd49b7add28e/70310846450.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/47023255310.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/43c943a7f934fa62a0ec94bf964b72c3/zazifap.pdfIn PDF document text
    • https://duragloss.pl/userfiles/file/45666107283.pdfIn PDF document text
    • http://hajnysport.cz/FCK_userfiles/file/vunifurel.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130fe222a458---71634647387.pdfIn PDF document text
    • https://ist-lb1.istanajp.com/contents/files/15682185105.pdfIn PDF document text
    • https://oceanflowerhotel.com/uploads/image/files/68035384983.pdfIn PDF document text
    • http://kunbot.com/upload/files/90928357531.pdfIn PDF document text
    • https://croatia-flyfishing.com/files/97404899213.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/busugawiwilo.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_off0000b1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CE 18264 bytes
SHA-256: bbaf84fc4c053854c719249fe47088083ea57f3f9fab5031787e98939799be72
font_02_sfnt_off0000f893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF893 10620 bytes
SHA-256: c961f07d70bb8b7e477bf6e3b9d5370e40285c245f6060e6dfe44a9ab5021cf9

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