Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2c3a38dd48a722…

MALICIOUS

PDF

96.3 KB Created: 2021-07-23 17:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0b2f9be87a8f1f7e7cfff2b7f20cf56f SHA-1: 0f42e46dd8267875550a914bae5228e0befb0da2 SHA-256: ee2c3a38dd48a722667ba718c4f7e4aa15ebe2dc54b5ce9c7930e2347fa6aa83
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/52743435cd6a3c970acf21c69ad8a502/farusalanobo.pdf In PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/jewedobuzutida.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6ab36f2f9---xujovape.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/121ba45402dc4fdf9736ba3edc5a0112/debutudojetesupudokuvinu.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/b6ffb1b33f2a58d11a25daad8178463b/liwusaduwivubufuxakalufad.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609f976dece25---65252846329.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/mifefipetezuwewazigi.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/59bc8dc725de70ba2405499aa8286f23/javerefovara.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/u6597q834kbnvj094ah9ct3915/vililonejemazelabupodatul.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfa04110ff3---faberonim.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/wawadib.pdfIn PDF document text
    • https://clearpatth.com/userfiles/file/95880247585.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078115ac97db---wawumubik.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/rb394va892kho03pb6k6j9957p/52610641042.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9715b8d73---jubeminuxigagunotuwiziz.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075760a171f2---29623614428.pdfIn PDF document text
    • http://life-worldwide.org/assets/uploads/files/25721179372.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160ae50e28e585---86436813405.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc22c1e9d1---sisuxujavagiked.pdfIn PDF document text
    • https://fibra-optica.ro/ckfinder/userfiles/files/94718165532.pdfIn PDF document text
    • https://monamifrance.com/FileData/ckfinder/files/20210623_027D6731275E866C.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/bemige.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/ed585671adddbed7ae12d45d4e2f31d8/fugamor.pdfIn PDF document text
    • http://cosmik-kino.ru/sadm_files/9035001390.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b575bf73cdd5008595803a4c2779abc1/73737023767.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=mouse+guard+rpg+2nd+edition+pdf+free+downloadPDF 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_off00011481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11481 17152 bytes
SHA-256: 5ede835082fb769a658c6ebf9657c50196fbc1dcf64d597bcca08891b7b54388
font_01_sfnt_off00014167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14167 10972 bytes
SHA-256: 64ecc4a658c69989b8555d66c13f10c1f8df88ff2257ec1119bbd8277663367e
font_02_sfnt_off00015af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1