Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb20e56ab566531…

MALICIOUS

PDF

77.5 KB Created: 2021-06-28 23:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 10d5ba12fd1127a58a840ad9f8abb17d SHA-1: eeefd106fed5b6290840084ce3103ed6aba1e500 SHA-256: ebb20e56ab566531212aacdb0ddc31d792c8eb7b61727ecf01dde389c31a5eba
176 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Multiple heuristics identified the document as a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content or phishing pages. The presence of an IP literal in a URI and numerous distinct hosts further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/j4234j6surn02p4ioahcbi3qhd/girel.pdf In PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/60156024748.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/b13c01c52c26e205cc831c71879a449f/gisikonut.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/2tt6kse3s3lm2scr2r4opi5hmr/gufazafutevidipibofik.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a68282dc46---72592091701.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/ziwolopetiban.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/65783350216.pdfIn PDF document text
    • https://petek.biz/resimler/files/73482646333.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/8e800ff6a9390e85d7c2863c0ca910b7/34699649864.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/p9inev4l72ghffe2597song0gr/88346712858.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ib5eg7si94pmkc10qncdo69ua9/kaweremix.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/9eb8e80c7c51a6d8244ed700aa626a1a/48577560651.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/5e906f955dc8399c60d1f36a358c6d9f/89126123324.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/994537b3de1b68357bb5a4a1eaffb16e/13635178657.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e17ed0fd---23269302351.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/aek4jf7kqdb9vhvcb7hklgril7/31384359367.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/imqhk1f0b30ak4ckgt956mp2a3/42388761168.pdfIn PDF document text
    • http://127.0.0.1/kardelenemlak/upload/files/nudovivijerarid.pdfPDF link annotation
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/bee7a138867b7c0926e671a644b97407/zilojizanumakuxojapuxini.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/5741f95a1e3878b5380a7ff38bda5da7/14611804092.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a0247dc9b8---81540991345.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/432b9634c0e283f202b2a59121efac6b/dozof.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/fls5iugil4d9mr0bvq2g7e0fjk/jiwuwipenivivixupu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=can+you+find+out+who+lives+in+a+housePDF 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_off0000cfb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB4 10748 bytes
SHA-256: db2947dc9db9267bc353afeedc3bd678771bafdd53a7cae3b7858d0890679694
font_01_sfnt_off0000e87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001008e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008E 15564 bytes
SHA-256: 2f4109bda14cc66eab94ec3af1910aef8a9d0401c018f0b997b0eab76bfd1cb2

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