Malicious PDF — malware analysis report

Static analysis result for SHA-256 0702e71f2cbda8f4…

MALICIOUS

PDF

92.3 KB Created: 2021-07-09 07:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 5b4303858aed7e1031e36ca5da9a7fe6 SHA-1: 8acd0cec60f612c89ae83ddc7604839a14725567 SHA-256: 0702e71f2cbda8f4fa11811f0980b06d9e7669849b1acb3a7b6f543da7cbcdbd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers, indicating malicious intent. It contains numerous external links, many pointing to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/149484016260e2941e1396f.pdf In PDF document text
    • https://mvpartners.be/images/uploadedimages/file/91131569495.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/wojawibevipele.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bb22188ac4---9646798183.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/dinenijikewi.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160725da622fa7---45956457095.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/6ec76c5fa383254baca0aded7bcc61bb/53455161619.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/18024472453.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/1uthsl401r8hrjrfmr41npa2lo/65322437908.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc18c0313b6---71888551234.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d87abaf3f---29802583223.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/53471350674.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/48938694464.pdfIn PDF document text
    • https://stmarys-perthamboy.com/upload/File/73509358972.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/madorigojebebo.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/73494617385.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/35744198169.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffd25c5325---54237477879.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce7990801e5---rakurudo.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/13639583769.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/6af8l9dc1tgdd4ffaumtiu4892/luzujumenedopudapegubuwe.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/3e022884a4df2c50bdf77cf5e9e97d0d/59780173451.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/19999786646.pdfIn PDF document text
    • https://nadamasristorante.it/file/zoferiwodubukonewudel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=obesity+in+the+worldPDF 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_off0001057d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057D 17656 bytes
SHA-256: 77db63580f0e9003bef750fd380de52059ce8fb6209c33b6902933eb4305ccf2
font_01_sfnt_off00013430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13430 10548 bytes
SHA-256: d147cedbc7ff39f59342f83c6aa7cd745b6a983e63bf38f168a48e576950f1a9
font_02_sfnt_off00014c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1