Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e2430d55c38e3e…

MALICIOUS

PDF

85.7 KB Created: 2021-06-30 18:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bc7773456590e534f12ce37d18cb1abe SHA-1: 2636162920100f8f73f86aaa1e6160dd13804bf7 SHA-256: f3e2430d55c38e3ec029a16fe7831c540d2956ecac3138dbebecda7874d8a692
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload directories. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to phishing or malware sites. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • 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.
  • 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 http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/58417386e955edf0dcdf62838c525938/mugazeguwafetamawexavuf.pdf In PDF document text
    • http://jinanxintiandi.com/userfiles/files/rutunilenakudewiluwa.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c42e1f432---59410887520.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/94144022150.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/5da324db54201b64729848bcc96600e7/43309683305.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/o8pd6iin95ehsgurkckcva3kl6/974912921.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/7fd7cfa2379c19b4e2837491408935f8/wotoxorazigigu.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/2071707909.pdfIn PDF document text
    • http://carnow.jp/js/upload/files/patinazajofuviwetejeru.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fbc61d5cb73f3bd8e1dd7f3209e20cbb/47172417213.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/f9cc2192896ffa7cf7878db65ab9d7da/befusuxad.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/fevoxabusizinewapivesipi.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/jamexijadimizi.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/a24222fbaf8eccdf34e0fd6840c39e5a/sapotexarebuzam.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebf1dc6683---38806986718.pdfIn PDF document text
    • http://adveotec.com/img/file/zexumamekudi.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/bunifel.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/9k8v76tjiudh87q1m8e1kqlgi8/ruladubuto.pdfIn PDF document text
    • http://phongkhamducphuc.net/images/files/41480666899.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078abc3e72be---judenolelikila.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/manofuxupaxiwatebiwo.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d51f0d75e5---lazibuxatuv.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/5f184e411962c075f97d7e4764412a9a/4481102391.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/ff00bc7bd5918e978b3c834bd6072b15/77359732061.pdfIn PDF document text
    • https://tidurmalam.com/contents//files/31588280338.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=water+treatment+plant+design+4th+edition+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE002 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80F 1636 bytes
SHA-256: e3a1ca7fbcde87b6e2bc585668cff1a50452d2a09c95c546c16e9f90aebd6500
font_02_sfnt_off0000ffdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDC 17468 bytes
SHA-256: 21bb31909420afe79730f77747021371286a2794013fe675846df43d171dab12
font_03_sfnt_off00012dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD4 11016 bytes
SHA-256: 1397a4dc6fdc60ccc3d95edef75eca46dd44c585517db45f29ec12d91b631359

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