Malicious PDF — malware analysis report

Static analysis result for SHA-256 e007dd2c5313f1d7…

MALICIOUS

PDF

74.6 KB Created: 2021-07-03 06:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2a4bc116ebd0a240675df3514ebad774 SHA-1: b7917d217a639e161ba96ba339722de0b7685fd1 SHA-256: e007dd2c5313f1d7cb2469aa49405ccde1ebac05972d19af8d48a23dbc3e36ef
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV, specifically as Pdf.Phishing.Trojan. The file contains numerous links to external URLs, many of which point to compromised WordPress sites hosting further PDF files. This suggests the document is designed to act as a link farm, likely to distribute phishing content or download additional malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4683

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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
  • 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://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/1642f535c2037b3f8a1b1988a07c00c4/20520025213.pdf In PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608244e8829bb---35970811794.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/5a470feec65da94083d70aac69311f19/xixigitegupibidajogeka.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/rafinasujitoramudifa.pdfIn PDF document text
    • http://azizolace.cz/images/file/tewegawufut.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/877bc09e5d87a70a1827da352b12bef9/65386548412.pdfIn PDF document text
    • https://wodepcb.cn/uploadfiles/files/gilofixapeliro.pdfIn PDF document text
    • http://tragiaocolamsapa.com/userfiles/image/file/35818497998.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094125156633---60562180475.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608577b58a9a5---latepuma.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/zazedusorulinerolibel.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/9u7hhf9sfh45lvl50ecbdl37i9/dafibape.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/n1i0c1uu44ospaaa3n6443690b/dizafugipa.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/uc63ovq7umf21cutnmpt6diop6/tuxatujomawedukutu.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609768a8cbb19---57923583958.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089bca0d3aae---99071361359.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/mekeletuzol.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/koxit.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/e2fb52rk27iecgol9cmmt2tphb/1753548489.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89a950104---ludajikukipokoloxisabe.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f95aeebd5f---74592839799.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ec7c5e32a---xumuninurudarijolevew.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/ee738b0a814ca7c1aa5a5a7d49e822ab/74396809019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+many+vertices+does+a+square+prism+havePDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/41f0c5fd1a287357682abf6c37435547/98070611985.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 3344 bytes
SHA-256: 52bcc6850b975cecf9dd603524da423e957e3c49ccfad22f2459c6d9ddafde62
font_01_sfnt_off0000e645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE645 18272 bytes
SHA-256: 5e875c576e7543f83e81c1c796659b4e6aad00c54bf31cb7d1ee9c42abfa9472

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