Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01f012daa983a01…

MALICIOUS

PDF

79.8 KB Created: 2021-06-30 16:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bf59ad4af1afab9dec3238686378685d SHA-1: 9b34296291d2c46f6bba876a743929eed34d4a60 SHA-256: e01f012daa983a01f7279c1fcec85587472abb89c871a827b96a2060c15ad5ff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to potentially harmful sites. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/mizuzowekujodonenuf.pdf In PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abfee098c3e---77375360187.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/38223275565.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/4m08t8cs2rfmsdg0qa1v8r4ncp/liwaliro.pdfIn PDF document text
    • http://redfordunion70.com/clients/869360/File/xovolomimekibid.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/92441695671.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c22a1b8ec---tujodixiwedifozesunili.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/0d1ed80de618fb73e992b84e91995bbc/36423466840.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/wejuxexotutudo.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/50200458746.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607caafb34eb5---14439190064.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/fezivejizawamodimisovav.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a56b1a3b0d7---wanagomut.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/tbj89157ibq91s309q438si1no/73696074955.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/213ddef042817385a43686d5336f4f2f/70433379893.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089dc7bcaa25---wefogulumusi.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/788a26c461794dfef13dcdc345346781/getewarigaxozeda.pdfIn PDF document text
    • http://goergenpainting.com/clients/0/0d/0d1038892961fdbf96b6a8e7e8daca8f/File/bezibisesedide.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb48b2613a---56584414176.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/6m6oank56ntnj6h7oth4pv4tq4/83233194132.pdfIn PDF document text
    • https://leavereview.com/customerinterview/ckfinder/userfiles/files/9423644649.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=love+has+come+my+wayPDF 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_off0000d3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FA 10276 bytes
SHA-256: 61414d95911c841aef2ca8576d584f058b0aa471eb638ac415f84ae00de68e5f
font_01_sfnt_off0000eb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB39 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001034b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1034B 17352 bytes
SHA-256: 43528c4d78bc3414565ada46d0256d52674d0edc9796351c1e376c89278d8f67

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