Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60275183b401210…

MALICIOUS

PDF

75.8 KB Created: 2021-09-27 16:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 824b084b5aff8be4a32d362097447662 SHA-1: 83c16fee7e6e347eaca64ff5acf8bfebb1e0f657 SHA-256: f60275183b4012106afad144b68ca7aee99d24829d96444565d6f230420ed8ba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to download further content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://synerhu.ru/uplcv?utm_term=download+file+dragon+ball+ppsspp PDF link annotation
    • http://nyt.jp/p_images/resource_library/file/nifagiwujuke.pdfIn PDF document text
    • https://thefertilizergranulators.com/d/files/16735181.pdfIn PDF document text
    • http://zxsolar.com/d/files/jituvelipu.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/48142257013.pdfIn PDF document text
    • http://bamboomfi.com/htdocs/cljr/data/files/tozeniso.pdfIn PDF document text
    • http://net-marketing.hu/images/files/53828698765.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/korodepijerulu.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1614fd7b8d80aa---16990735374.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/38214694488.pdfIn PDF document text
    • http://halongbaycruises.org/upload/files/76548712325.pdfIn PDF document text
    • http://lejuriste.ru/files/file/67642557274.pdfIn PDF document text
    • https://pellevah.com/upload/files/71695814445.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16132a9e4b5731---dofizezitujedaporux.pdfIn PDF document text
    • https://yar-net.ru/userfiles/file/kelud.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/467snp2668p15r704r4i4pqgsp/mujiwezevodorepabizofa.pdfIn PDF document text
    • https://oglethorpeclub.org/~oglethor/UserFiles/file/26486053164.pdfIn PDF document text
    • https://xn--49st2et51duvk.com/upload/files/41157905130.pdfIn PDF document text
    • https://maria-galland.ru/files/file/73260787621.pdfIn PDF document text
    • http://rabotatver.ru/userfiles/admin/zivakugewebabexifigo.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/48bb37c41ea9a445f37d54116f47d1b1/60149597141.pdfIn PDF document text
    • http://op-gold.com/ck_image/files/37803492631.pdfIn PDF document text
    • https://ashleymongolia.mn/uploads/files/93820352790.pdfIn PDF document text
    • https://agros.net/uploads/file/tetivurerevurulan.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_off0000c05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 10800 bytes
SHA-256: 12a6a9c6d11f7ef95d9fa0d3a2c60ac167979d34a481ab73f21d74e0e1165d49
font_02_sfnt_off0000f100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF100 18844 bytes
SHA-256: dbe237f5daff974e263224132bd5c915f7e5fe05fc56b6f091fe80a4b0fd1daa