Malicious PDF — malware analysis report

Static analysis result for SHA-256 076ca2e8c3f1ed34…

MALICIOUS

PDF

88.2 KB Created: 2021-09-07 03:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d3b021980ac660f4c86093d15b9eba1a SHA-1: 67cbf7ae70a427456d0af2c68bea46839ac7075a SHA-256: 076ca2e8c3f1ed34515aba44d43f63d5f549eb5fed57f2eaeb24b46876103593
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs that point to compromised websites and disposable hosting, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of external URI heuristics and link farm detection rules strongly supports this attack pattern.

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://pistant.ru/uplcv?utm_term=negative+numbers+revision+worksheet+tes PDF link annotation
    • http://osteriadelcampanile.com/userfiles/files/57759875012.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/fa975619037dfebceec18ada875c5d61/nagipereji.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/20013231039.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e215cd58868---57200608647.pdfIn PDF document text
    • https://rasathantrananotech.com/ckfinder/userfiles/files/96936237832.pdfIn PDF document text
    • http://bmhs1963.com/clients/7/72/7286fd37811b7a5dece6e69924e4d5ab/File/90885681114.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/76198609453.pdfIn PDF document text
    • http://goodwill.as/userfiles/file/14448341594.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/sexedutezifarexesun.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/35993b13d8ba1fa4edf683c8858c08a1/bitaxatixulex.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/291ccb50d71f77b1372189357e3120bc/40495824522.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/9298237925.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/5b437a42176b49b1bf02b5c979f60ccf/70805435050.pdfIn PDF document text
    • https://www.avantagesapp.com/uploads/files/48483280618.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/kibuga.pdfIn PDF document text
    • http://wami.cc/data/files/dumas.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/10965162504.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/62886879714.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/nikosofodobuguwutajonin.pdfIn PDF document text
    • http://rapabzenec.cz/obrazky/files/midowaroxomiz.pdfIn PDF document text
    • https://lecapsuledigian.it/file/92358443236.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/b7ba7dbf04efb44598abf7a6a9e1da95/wagagumusobamobubuxawalu.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/urdu8lpmbii9crnce9tnkv8e43/40919901311.pdfIn PDF document text
    • http://kledingindex.nl/images/uploads/43203188566.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_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A65 18352 bytes
SHA-256: f8fb31be42dcf8f689142f177d2fad2206ffae74f1a20c0d54112267a337af02
font_02_sfnt_off000139dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139DD 10968 bytes
SHA-256: 12f6320925696affff3a6b71e368192a7d8bc235c52600231c0c76d01bf112d0

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