Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a113a68f17254f…

MALICIOUS

PDF

71.1 KB Created: 2021-09-30 12:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5f74e346ca9a395e87f4a71d9771aa06 SHA-1: f9dd07578eab722f3ce7d0b69e413d83d86910ec SHA-256: e0a113a68f17254f5ce3928b9baba7ac6b1393ea3e07c98d5f0ac8f775d17ef5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous domains, some of which are identified as compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the presence of numerous external URIs and the overall structure indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://media-get.com/userfiles/files/65288563654.pdf In PDF document text
    • http://www.fdconsult.qa/public/uploads/cms_files/pajujopisorif.pdfIn PDF document text
    • http://aptwash.com/userData/ebizro_board/file/vegugululuwipepabofu.pdfIn PDF document text
    • https://www.domaine-de-la-ferme.fr/ckfinder/userfiles/files/34184338066.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/23373460696.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/vilobofararul.pdfIn PDF document text
    • http://tce.vn/imagesflashupload/file/jezaxulezokipoden.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/0dbd86cfe0b3e3b12f156d3f69bd8625/60020365601.pdfIn PDF document text
    • http://khocabien.com/uploads/files/53380686442.pdfIn PDF document text
    • https://holycrosshealthcare.com/userfiles/files/48055806715.pdfIn PDF document text
    • https://tiemhoahaibara.com/data/dulieu/files/tapezedez.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/5pqcuu6lqoj6c2t26nj9ag78c6/35434188495.pdfIn PDF document text
    • https://tiemhoamo.com/data/dulieu/files/woripuvem.pdfIn PDF document text
    • http://silver1979.com/upload/file/fajojikekekukawuwovikexo.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/delekusagupume.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/197cd9f991d679a7e40b34f8fb6cc07c/18358491265.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131658c20521---32242907073.pdfIn PDF document text
    • https://ezokniga.com/uploads/file/towevasozuderaz.pdfIn PDF document text
    • https://ccvt.vinaonegroup.net/upload/files/sexom.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/mowedepekorutafizetiliv.pdfIn PDF document text
    • https://tidaksusah.com/contents/files/90910326389.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/tagukigasapififirunu.pdfIn PDF document text
    • https://all-stage-meditation.tw/uploads/files/6141a46c1ddce.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=hack+dragon+city+2020+iosPDF 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_off0000b011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB011 10804 bytes
SHA-256: 794ff1c86cb2abbe57f1bb3a733d619b263cc183d0b24b5177d91e7c6fd79685
font_01_sfnt_off0000c8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EF 17944 bytes
SHA-256: aaa30a69b7af167b7c02f8f4560445a6ca51c230332cdf1889001a51d89435d9
font_02_sfnt_off0000f5a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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