Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faf171b11d024dc…

MALICIOUS

PDF

134.8 KB Created: 2021-09-05 09:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 10db1d580cd98dcfa4cd26fee524b001 SHA-1: ed3a8d7c4ad22885fdf68545f1ff080db36b99b6 SHA-256: 9faf171b11d024dc760f2efaa09667502829ea6dad27a1d0e57ff4054b2bc662
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV and an ML classifier as malicious. It contains numerous links pointing to compromised websites and disposable hosting, indicating a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content, likely leveraging embedded JavaScript or exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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.
  • 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://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/retqbgh1fmdcm04c2cqmhjg9rb/fevosaxaxa.pdf In PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file///20210508154458_830715047.pdfIn PDF document text
    • https://cubic.is/userfiles/file/ferilapapafepimajuji.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/e439cff2cc6d897cb27d34ea79c1befd/tafutotuboleluselevijuxaw.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/xuseviz.pdfIn PDF document text
    • http://www.netcorp.hu/data/editorfile/73481319443.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160fc834b4ef75---69218695277.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/16100ba244b666---27458950296.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2b1c951e54c433c2f48c2ede2964b5aa/zafuvigiri.pdfIn PDF document text
    • http://odontotecnicacoop.it/userfiles/file/lazixekuratabutopi.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0744a54d0---zoxakefokikejudupi.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c75120a18e4---34582472569.pdfIn PDF document text
    • https://fasaac.org/temp//files/totowuna.pdfIn PDF document text
    • http://mnarch.it/userfiles/files/zimizubiwerepen.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd705f1e07---paxum.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607620938518d---11211526905.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/21582462043.pdfIn PDF document text
    • https://bedandbreakfastchia.it/userfiles/file/62627973219.pdfIn PDF document text
    • http://natproperty.com/userfiles/files/29162122919.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/xogamo.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160c74ab69b6fe---gapinela.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/vomegeruwikafadi.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/4di1r939cg80ljg32cdsets5nn/zevurorigos.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/tetnmjppqcvn0gq7bnrrjou7n5/vavazaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=mary+lefkowitz+not+out+of+africa+pdfPDF 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_off0001a294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A294 21616 bytes
SHA-256: e513e723a99356a10c573929928ef85c825da474f58e75d84adaa58beacc189a
font_01_sfnt_off0001db24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB24 10892 bytes
SHA-256: 4c7909738e47aedc8b2ca61cc3b36c8b3660d029a7d486df87a36dffdd18d335
font_02_sfnt_off0001f495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F495 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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