Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8ff7168d0154dd…

MALICIOUS

PDF

77.1 KB Created: 2021-07-14 00:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 37dff067c55576afefa0b90a439a41b5 SHA-1: a048b58b50219fae025166fbeea1a795cd731d01 SHA-256: 2e8ff7168d0154dd092ac426b865dc817894c7440a4a24a706ce7a8a8ca9aff2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting it functions as a link farm to distribute malicious content or phish for credentials. The embedded URLs are designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/076fa543943b6d14f2647a6dca43c70d/70609501193.pdf In PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/ppp3t10ckeq3jns7ojnjgfe5n2/30737345354.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/48344323805.pdfIn PDF document text
    • http://yngc.ru/admin/ckfinder/userfiles/files/55371211189.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608101e7826b5---19486337857.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/nqibtuo0l0gc7h09sk30r7laj3/kigemezep.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/tinajomanoxijuneposuw.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606eae764a357---63593346718.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a18203d190---80004559107.pdfIn PDF document text
    • http://scantech3d.com/files/wolevapep.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/xiraparikofugapujijop.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16082d907e94da---tinuketediputati.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa2d830092---15703549518.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/2874c2b7124018bb18654b372d91d983/tekuxuberoxejafenar.pdfIn PDF document text
    • https://hgb.se/filer/file/jujivirelibenugetaxiw.pdfIn PDF document text
    • http://1-cx.com/ckfinder/userfiles/files/jefakiwijalukekerogef.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c842b34f---75468398037.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/e7789ebd3aeff617dcb93f82e0476292/porukipuzovanop.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5388db0b.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/genamujavezizix.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/6pncg25rletrk5tbpv6lik3as8/boregok.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/d6qicvlofb39566ia6solgekbq/paxesagifava.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/5ctjp9g5frvh0up5pscuil4jf7/kevemakafumakobeme.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=we+have+so+much+in+commonPDF 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_off0000cadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 17756 bytes
SHA-256: 2489f11604c53e602b58d1ef43c26ef4bb7d808daa3f39d82b9a3fb012f48edd
font_02_sfnt_off00011022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11022 10412 bytes
SHA-256: 4e424cae9bb138b58260cd83b1018579ae7d9f0ccb9cfb699c42fd97ea983e85

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