Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b3a07f3ada928a…

MALICIOUS

PDF

75.4 KB Created: 2021-09-06 19:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 62dad399080368167feb753d8beac25f SHA-1: 6b697ec34b9e0a64a258b51f8ac14c5677daebb8 SHA-256: 00b3a07f3ada928a9971c206865c116f07fc69e03df078520c4d0882a0596b27
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous external URIs and links to compromised WordPress upload storage, suggesting it is designed to lead users to malicious sites. The presence of embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

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://huntic.ru/uplcv?utm_term=swords+into+plowshares+claude+pdf PDF link annotation
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/laredodutusijajexiwurab.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160da51903710a---sulisuk.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d59444df44---vezubokitewipuzirufupowet.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/93966121043.pdfIn PDF document text
    • https://soalmatematik.com/userfiles/file/tutadojutowaloloxid.pdfIn PDF document text
    • http://helloshoppingnepal.com/userfiles/file/ridotixebuvabezos.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c143cfeb6e8---82345938219.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a71e0a5cd7---wuxevipogu.pdfIn PDF document text
    • https://menuiserie-sainte-anne.fr/userfiles/file/fiwomipixuganotut.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/d7df5fd35b6d31b45ac6c708f5a98f7c/bopaxu.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/fcde49896f1197bf6bf8078102c4d29b/pegudapojedopij.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/perixodurozuje.pdfIn PDF document text
    • https://andhimazhai.com/images/files/sibefexolosevisupibefe.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/a20bda635daa6a376d821c61bcf14284/vupaj.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/12561772553.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/84203982762.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/98535523735.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/7af367v9dq0d0lrbja994atems/4182748763.pdfIn PDF document text
    • http://greenhere.cn/upload/ckimg/files/202108040343229254.pdfIn PDF document text
    • https://chris-arnold.com/userfiles/file/venusukesugot.pdfIn PDF document text
    • http://chukysovin.com/img-svc/files/57849094282.pdfIn PDF document text
    • http://southwest66reunion.com/clients/f/f6/f6f8b7bd17d60304c359e527a2c43449/File/toxejezire.pdfIn PDF document text
    • https://gamma-electronics-eg.com/userfiles/files/wolelegawisafixelaxevotim.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/cee054c67f071dfe774768899ade757a/91494600384.pdfIn PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/40569741563.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/mbdlo0g4sf01u9pmfpoqukleah/fesozubarikova.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_off0000c198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC198 17320 bytes
SHA-256: 65fbdd3eb1be52ee91bc976f9183ec60f64d52c0b22f4496cb02fdbb29c81a42
font_01_sfnt_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10636 10976 bytes
SHA-256: 04415b481fe5da7853aa5175dce83a6a2064bb89750d7b54ee9829c02b9b2095

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