Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e269ee09b29a949…

MALICIOUS

PDF

126.1 KB Created: 2021-07-03 11:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 6ebac3144de325522b389d8eaf157861 SHA-1: 1664ea0a09f303cc3b4c405cade90c8c9e032a82 SHA-256: 2e269ee09b29a94948a07d043e7bdbe99f2e9ecb2ade25b457a7c6487c2c51fa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, utilizing compromised CMS uploads and disposable hosting to redirect users. The embedded URLs suggest a phishing or malware distribution scheme, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://wills.sg/wp-content/plugins/super-forms/uploads/php/files/aa278cd06eabd978f259c2e9901f14e2/runodavipakex.pdf In PDF document text
    • http://octapus.vn/images/uploads/files/torekedigev.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0aa45baa4---15170766642.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/movufufomiki.pdfIn PDF document text
    • http://apcmagon.com/userfiles/8004941101.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/9glr4af0j92vdujpnk0oce61fv/jifagazetojaxarorinej.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16092ce9c7e410---mufagukavafonu.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075b4bcdc678---95706963670.pdfIn PDF document text
    • https://primer-spb.ru/files/files/83078051780.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/lipuwuriti.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/j9agv4mdsu6ou2s6pprui720l2/34959093260.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/dac7dc9627ba7eb9f87d8eea86bfd5dc/lapax.pdfIn PDF document text
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/aqathrcpfcdqsv64cle878ee5p/21090707557.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf0f7067eb---56208537752.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d29a3c035---tojorudinokukamafuxor.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/6cb4d9561637df1007d0b9fdb06c97a6/ripejekusakowinevijok.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9d68f1c8a---bepowas.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/28556932943.pdfIn PDF document text
    • http://rorolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tetufiro.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/xufanejefewibexavafobi.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/6ed60b5febb30764b285c81692d1bb9e/vibuporugo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=extinction+risk+from+climate+change+pdfPDF link annotation
    • https://doi.org/10.1In PDF document text
    • 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_off0001842c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1842C 20416 bytes
SHA-256: 202ad6c6c7a65d09802af83c5cd3483e1a921be1b395f91f13e8bfbb5108a173
font_01_sfnt_off0001b939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B939 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001d150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D150 11244 bytes
SHA-256: 451eabf437418e6ffdcf8593c271418d4d30139530107c05e8990b786dacedd9

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