Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe08d2e894c89add…

MALICIOUS

PDF

88.1 KB Created: 2021-08-18 23:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9baed85d875640d90751e6d15ea63d1d SHA-1: 2e422b569b191dbad5d3cfa3fdef97e2b1e42800 SHA-256: fe08d2e894c89addaf43ff97a39281d4efd738694e3ed22fbee745d33ee99d7b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871525e5a31---98018033873.pdf In PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/2e1fc5ec31c5ab68060fb5a9e1003b8b/xazejiwugisexinexidede.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16073e095945fb---sekefofivugu.pdfIn PDF document text
    • http://liyangah.com/Upload/file/nubarumaweredepazasu.pdfIn PDF document text
    • http://katyababash.com/images/uploads/file/73881645457.pdfIn PDF document text
    • http://zzquansu.cn/d/files/rewovimutafeverud.pdfIn PDF document text
    • http://jezirka-biobazeny.cz/UserFiles/File/3930529080.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad893646904---23505743484.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/16750613742.pdfIn PDF document text
    • http://dhleisure.com/ckupload/files/50502548531.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/larixetasebegopukitob.pdfIn PDF document text
    • http://vildmarksjagt.dk/userfiles/file/26671319696.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c658710f4c---jemabenuxexoka.pdfIn PDF document text
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2d6be8cad---fibomodew.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/c051bd30983761ed3e3e979c33ffeff6/65501097594.pdfIn PDF document text
    • http://cpils.com/userfiles/file/bulujanikirozojepe.pdfIn PDF document text
    • http://retco.ge/ckfinder/userfiles/files/pitarubemawakekufawexo.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/2063539db638319fe67f2a0f0774f4bd/rokasinugutul.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/mijel.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb634e657b---kimapizajugudip.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/3acf0beae5712e9a8417972d32181617/23549649764.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/9263tbll5fudoglvnotvnfd721/66964778481.pdfIn PDF document text
    • http://kasargod.net/uploads/file/50431213698.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=grace+fit+uk+home+guide+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_off0000efb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB5 18228 bytes
SHA-256: ca64e4f9ca9715438a59dbb5686a0d81b4b7b407ae44056ed7bf750674164096
font_01_sfnt_off00011ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000136fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136FB 10980 bytes
SHA-256: 39fd4902d4dddbd0f4064fbf968855450dc37dee3a07ccf75b876a3e1ab6300d

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