Malicious PDF — malware analysis report

Static analysis result for SHA-256 395d29392e8516fc…

MALICIOUS

PDF

80.6 KB Created: 2021-09-03 08:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a479f7408fdb80df9970401254b064d5 SHA-1: 815e74498dfdfb4e57fa0e97cd1b58603a65b740 SHA-256: 395d29392e8516fc0581a5d541944602e7bca48ab2ae6c9ce900b32a0504b853
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a payment redirection lure. It contains numerous links to external sites, many of which appear to be compromised or disposable hosting, suggesting an attempt to distribute further malicious content or phish for financial information. No scripts were extracted, but the overall structure and heuristic firings strongly indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://suksesunited.com/contents//files/nobemikuwipukozunu.pdf In PDF document text
    • http://realcomfort.ru/content/upload/file/vipawe.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/e7cd1bc52af58e0752142781ad493a94/94950106781.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/s5i452t5b3lh9g2fo7nkah3lq6/12722984378.pdfIn PDF document text
    • https://imagebrandstudio.com/userfiles/file/41543266066.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/jesowunupufovatasire.pdfIn PDF document text
    • https://congchung7.com/upload/file/2035842966.pdfIn PDF document text
    • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/69464579866.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210730_90A1DEB8CC4C9E97.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/disidof.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/vkrf3jsnj82pvbv04vn83cjg1b/siguwosatefegatipirasi.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/juzunodokis.pdfIn PDF document text
    • http://retailcop.ca/files/vategawigi.pdfIn PDF document text
    • http://wonikquartz.com/upload/editor/file/1629586189.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4eb8fa0f5b---84625833257.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/52916404816.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccc067fdcc---vofubumibeno.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/1de45d6ccda0b243eb0c9b97c007abdb/mikotajosaxa.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c76b1d1b8d6---14128151326.pdfIn PDF document text
    • http://cherryontop.pl/upload/fotki/file/98892524697.pdfIn PDF document text
    • https://ifbscalidad.eus/files/galeria/files/zomaporomefo.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents//files/xexivatazanolixixef.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c968c8915fd---64453736811.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/xiluvula.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b23b7b34376---65374285905.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/b9237d11d64cb9cc758428ee8298290b/86499005906.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=cash+flow+statement+theory+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF229 16220 bytes
SHA-256: ac274e52cf98c851837be4566b0d670e74d01a3b43be315b42a0738e332efe3f
font_02_sfnt_off00011be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE8 10904 bytes
SHA-256: c04df84156ffc20b5ede8dee8f6fc25cdfb8c4575ae5fafa6221347ab4b8e58c

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