Malicious PDF — malware analysis report

Static analysis result for SHA-256 32df847770ea9308…

MALICIOUS

PDF

94.4 KB Created: 2021-09-08 10:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 93f2eb9e8a00226ad21a238db39fc97d SHA-1: acbbc6042551d3f224bca46a7ac6c98154bafded SHA-256: 32df847770ea930868ba91fc6b30cf44858b48ef1cfa4826b6b5f945e0dcc8be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to potentially compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body is unreadable, but the heuristic firings and URL analysis suggest a link farm designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://polkovnik.su/upload/file/45890382637.pdf In PDF document text
    • https://dodatnagarancija.com/userfiles/file/vawodol.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/45867157464.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/19629899949.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/44f878d7f3eef99a54f3d7ec7fdf5aa1/rolajibenafixad.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7ecd8d9cf---16015149770.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083929f5ca82---biwapanu.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/fe66e8815712ff573dd95b2394d0d940/62734556974.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e50d25ec0---notimigetesedepakakikow.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/hrh21r31rh832tv4lagmgn1ub1/53539601360.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703b5de533c---31942418637.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9d5a574c2---35222079447.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/8c79683499dac974b9c44bef152f46c7/63244165489.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/galazubolimokukop.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/26444932268.pdfIn PDF document text
    • http://ximangsongthao.com/app/webroot/uploads/files/2036735147.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/52575592061.pdfIn PDF document text
    • http://sentai.cc/data/file/20210827_053208_747.pdfIn PDF document text
    • http://skncn.com/u/files/62415245187.pdfIn PDF document text
    • http://dichvuketoansg.com/luutru/files/xusalowi.pdfIn PDF document text
    • https://hoya.hr/UserFiles/file/39043755995.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/fbe5889bde0af5283874b9777aab7922/vudibagexebenepurejew.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a0eac5e5ce6---zixubuzidavadawubewa.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/73d054691d017c2539b2e35cfb1328f9/59521458937.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/53904030107.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=integrated+math+2+volume+2+textbook+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12230 11256 bytes
SHA-256: b53440f848d9d3030e3f5f58410b8e4f1822fe440a5803048fc0427b0def70c7
font_02_sfnt_off00013c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C0A 17912 bytes
SHA-256: 6769a6f8db2826976639c258e46c88e799d04fe0389b4d8fb15db2822c3cc6d3

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