Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fda9486215f8dfe…

MALICIOUS

PDF

80.7 KB Created: 2021-09-06 02:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e01690d91838e1ce15895102effbb9c3 SHA-1: 2d1f74a12dd67e78bbb3adef954c05f7367ddfe6 SHA-256: 3fda9486215f8dfe8219c177209a527aa94e04540faeede035e9fdcc3b689d79
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a significant number of embedded URLs, many of which point to compromised WordPress sites and are structured as a link farm. This suggests the document's primary purpose is to redirect users to potentially malicious destinations. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16c64b283d---defogif.pdf In PDF document text
    • https://lesura.net/userfiles/file/60203153168.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/keropa.pdfIn PDF document text
    • http://avenue102.com/uploads/file/siruku.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/b7dffacf690d90a7983dbda15001fe36/dusonoj.pdfIn PDF document text
    • http://adamslakeband.org/userfiles/file/40984802817.pdfIn PDF document text
    • http://peterpan1996.it/userfiles/files/zalosabejumenituma.pdfIn PDF document text
    • http://myflora888.com/ck_files/files/davawatusimixawa.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/d243804065033f7042e7c940e0d5feec/masonejokop.pdfIn PDF document text
    • http://celyroknaterase.sk/editor_uploads/system/files/sobijobovadovabizubosoge.pdfIn PDF document text
    • http://brukbet.com/user_images/file/36498229409.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/59103580966.pdfIn PDF document text
    • https://lixtech.com.tw/ckfinder/ckfiles/files/rizebijiwev.pdfIn PDF document text
    • http://badischer-kunstverein.de/ckfinder/userfiles/files/92578503866.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160da71c20e639---21884646587.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/1g0c2jtl1dp5s94eam5p3vcea2/feteko.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161193b009fed1---56082165601.pdfIn PDF document text
    • http://asiancfea.org/userfiles/file/pabejoluta.pdfIn PDF document text
    • http://safarang.com/basefile/files/48211655838.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/dp61farup1nar0hcal23jgnjp5/senafajidu.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/4ba177306132dde6efcd90159f4f2e11/37722363001.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/nojawegemuxatexexo.pdfIn PDF document text
    • http://gyobel.itpublic/file/50749109745.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e073b140123---besap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=indicateurs+de+d%C3%A9veloppement+durable+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_off0000cfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAD 19404 bytes
SHA-256: ca4b4aa88143d15ec297cabbc648b9e1ae339b83946aa06309424531ab71a572
font_01_sfnt_off000100bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 11192 bytes
SHA-256: 55e46104d9eceb2c1c6e2522ffd424f3003d3c3d08bca2450681321e81fb425c
font_02_sfnt_off00011a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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