Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2c70e0d352471a…

MALICIOUS

PDF

100.4 KB Created: 2021-06-26 05:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ebda21d8dfd69ee76f154791fa88ffdc SHA-1: c422e429e240f7a3cf5ef52134fa7f48d4057f09 SHA-256: ee2c70e0d352471af0411ff31a49bcf30f590b6093dda9e1e65383727dd6e15b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains a large number of external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting it's designed to lead users to malicious sites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9788

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://inwebjor.ru/uplcv?utm_term=another+word+for+unchecked PDF link annotation
    • https://anthonygillant.com/userfiles/file/xibuvovijufezezaberaniji.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/co5t768bntk0ekeit6fkrc1pp6/25010484216.pdfIn PDF document text
    • https://xistenze.com/files/files/tuwiwosavuwa.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/7s13hm563ano2kb0pnav4npp8b/jiminizageba.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/bafe51c50f47bc17cb52ac665ce91d1d/53104129371.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/43808511593.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/a4b95442a68588ed6d5230c710fa3622/6249184983.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/musemogarenake.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/60819897127.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4857733c7---kamuj.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/rs47255h5aer574fjn2fd3ofn1/jebofuturadumuvudof.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/41fddc19df184d1a499e5cf1a642f627/79700863595.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/ba621f359a8c5fba6fe2e9c3c1cbe570/98301473915.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085ebcf58ce1---17880114569.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/romewosedajekoboparas.pdfIn PDF document text
    • http://banghetretruc.com/media/ftp/file/2133967478.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/e7fc130d19ca60000950c127c60a7340/80044216366.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f59127bcfc---68181865838.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/68e94a398f62635367fdf017cd2f29f3/luxunokut.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/54497567489.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/jifuka.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160996e2307c62---9053554311.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/tfb5kmhirb313joseqqvmrbgb5/sofigomevipulosogi.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609046a526fd8---dimipotovow.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba334ed4773---15468452174.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000132f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x132F3 18616 bytes
SHA-256: 0e169aba2053f77a038c62af4e0eeaa42f042d0377931d635951106ff872d5be
font_00_sfnt_off0000e161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE161 25504 bytes
SHA-256: b8124d32145a9235f9047322552bb40f859988c9531db921ea3f2ce62e6e223d
font_01_sfnt_off00012030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12030 5156 bytes
SHA-256: a5c879e480c8308df57f8bf1f0c5443ba6523b4550f43ee16056a5c3cdc50de7
font_03_sfnt_off000151b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000169cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169CB 10364 bytes
SHA-256: bd9f232e7896f143b18907f6e6454c011f3298b4ebdde40b7e97434d76518eaf

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