Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a0353a86d46ee7…

MALICIOUS

PDF

75.0 KB Created: 2021-09-06 17:34:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 89f3c535c5d80139047cccb1f27146ee SHA-1: fb581763c6e6d63eb26762c97014710d16401fce SHA-256: 26a0353a86d46ee791402138a1d8200f50a8a14d7dca36e46c66d57bc6815b98
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs pointing to compromised websites and disposable hosting, indicative of a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://cructi.ru/uplcv?utm_term=python+xlrd+worksheet+name PDF link annotation
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161204e71c7523---77398686385.pdfIn PDF document text
    • https://dukeofmarshall.com/ckfinder/userfiles/files/pipejelixoziresawitutot.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/j4dlpai4vgadg9cvhsfb6tcku7/74273276704.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/c0ed60efb8d50e761424099a9bf073ae/geredukonadeniliwugebewen.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/45933916774.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd90a33af7---bubabubajobitagu.pdfIn PDF document text
    • https://izometal.net/mm/file/9746567997.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/ebaub3vnka367equqg6ethemb2/barajefirat.pdfIn PDF document text
    • https://ambalatender.com/upload/files/59618465877.pdfIn PDF document text
    • http://simonkuehner.de/gfx/userfiles/files/metotodunijepogazi.pdfIn PDF document text
    • http://sns.hu/_user/file/kopigavigimofapi.pdfIn PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607739baf098b---garezugedijusasekimu.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/8lgc7pnptogu02cfbndbqbhsea/63450807466.pdfIn PDF document text
    • https://eghamatkade.com/basefile/eghamatkadecom/files/vozafofasetolefamemesoz.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/3d13b628cf1e2a984c290cfd4c0390c3/59336427875.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/8374bdfbdc4080046f17e91762650383/9248091594.pdfIn PDF document text
    • http://maekalocal.com/Maeka/UserFiles/File/79397051142.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/5ca25cde39e8840706f6c08f6fe4754c/35228968210.pdfIn PDF document text
    • http://wearefamily1234.com/clients/3/31/31b46d3307e4516335aa88350909469c/File/49635224670.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/kidemamusabusuzif.pdfIn PDF document text
    • http://quadocdao.vn/uploads/files/63999368943.pdfIn PDF document text
    • https://atl-50.com/files/file/20985314524.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161124e83c4dec---68203173784.pdfIn PDF document text
    • https://zilalcooling.com/other_files/File/23046450026.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/7204e9b41bc31c6c6258556659a0faa1/58934217079.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_off0000c1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E3 10816 bytes
SHA-256: c936a55766029c7a655aa74adccd2bab8e0b0f31a230d84916ec8588a9d1b90a
font_02_sfnt_off0000f2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C6 16600 bytes
SHA-256: 9e78558d271a57feba4cc361a1f409d2c5ac36c9f9878c671b39d249ad7fd5e2

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