Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5ba049d077c5bd…

MALICIOUS

PDF

97.1 KB Created: 2021-07-03 07:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: c29fa13bd956358801bac924ecf7875a SHA-1: ea3fda6dc82c83da96da3f6670d1d7c752e912f0 SHA-256: ed5ba049d077c5bd457543d76825728e6e4487d108624fbed01aa2158d25c370
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609badde98f5a---birekidugidemesota.pdf In PDF document text
    • https://riondene.ch/img/uploads/file/lagudezanadovegog.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/kbnkjugdnrsfl5vsftvbum0jom/tatotuxinofuv.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/iv61a7ctvkpd26pkbg85lmaj54/98777271162.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/5b3884eb8373f3cc4d547c852dbef80c/bokixapikalu.pdfIn PDF document text
    • https://nguyenthelong.net/userfiles/files/31615955893.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082a100df30f---gunupomufewisinifigizi.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/79103756224.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/f509dfbbc4e2deebc878ec821e7e4b87/newarajiwenogixaxi.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16071f5b5f3fbb---35424023174.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/ktabrrbt3pb5nr3j700a23s1da/97909429669.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/6761748cc6d8e54cad4d48be94383619/59320667281.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ac809c9865e---4164564820.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e66711d81b---towezixefosonorud.pdfIn PDF document text
    • https://agermag.ro/mm/file/64747552151.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c343cb5eec---tijewepojenufod.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/7373bbc7a0a87c0615800b6ab7c99d1e/45212631759.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/81730349070.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0dc32cc30d---60588382863.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075bda65a6c4---pojixumij.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/b6a57b0fd4a994d45f2238799f5cb58b/levoriwajukejukelezoxoz.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/ap65eoi5b7u3mu9cvihh44qnt1/kelezotoj.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c39b6dd9ad2---jujadezelisemoxuz.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f735958a2b---dofoja.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160dfa31a67cd4---teziveguwewapiwopama.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=has+sbmm+been+removed+from+fortnitePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6D 18192 bytes
SHA-256: 31c56e4c10a0bade976847ee084e1ac00b5ef7135ec5c1921e78dd8be862826e
font_01_sfnt_off00012eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000146c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146C9 16636 bytes
SHA-256: 598a90efaca9b56d593a0b6b085fe50b52ed42b4a8076817d08e2c99abdf8926
font_03_sfnt_off00015e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E35 10668 bytes
SHA-256: 6818a71d7ec5e9f68c9e8aa2761a2ffb0512f80df2aa1dc404fa2e327a1b5da1

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