Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe01f7df691485d…

MALICIOUS

PDF

88.5 KB Created: 2021-08-04 03:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3972a421f735797716f0cbb267f1226f SHA-1: 3fabfab5842d0eb000a0c10ba4db524283528910 SHA-256: 7fe01f7df691485d5b7c9f1746792504d1d13ee7ff021426da48f2db0ef961bc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URLs indicate a link farm hosted on compromised WordPress sites, a common tactic for phishing or distributing further malware. No scripts were extracted, but the structure suggests a lure document designed to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160729fc81dd70---90925201948.pdf In PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/4496338e836139b4e0ff6a2ebb190ee8/jafiligezegaxebipusukuli.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/eab66f6c9cf28d0eab3c2b99139f0c8a/19663589253.pdfIn PDF document text
    • http://tienhasteel.com/app/webroot/upload/files/dinokorile.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160b9be9ce20b2---51061376526.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103a367193b6---84571303013.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-4-29/20210429195129582742.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///razowiloguritig.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/6561199743.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/fgbprk4qgnhjgn42ajrk6t4te6/falig.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aa52b71ba62---xazabifenudemujure.pdfIn PDF document text
    • http://armanetti.com/images/musuzapuwenikojexi.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160719cd76b0db---52974597809.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8635cd5e5---basexogozobatofotu.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/zutifuzinoj.pdfIn PDF document text
    • http://cauthinh.com/luutru/files/1277394530.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/62738907115.pdfIn PDF document text
    • http://fkhd.cz/data/img/92031613135.pdfIn PDF document text
    • http://scbczy.cn/up_files/file/20210616_023405.pdfIn PDF document text
    • http://zuche0551.com/upload/file/pododajedelanawipud.pdfIn PDF document text
    • http://sammyurias.com/userfiles/files/44928185612.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ce9e39059---kalurile.pdfIn PDF document text
    • http://wisewood50th.com/clients/3/35/35ca2b70ae131fa39667c240906a3fe4/File/69775176594.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/14376374880.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=can+i+run+my+guns+serial+numberPDF 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_off0000f6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CF 17000 bytes
SHA-256: 43ec0c3e311ce28a6025138dee186bd89458e7771ebb07298509f3d65191c3a2
font_01_sfnt_off00012338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12338 10616 bytes
SHA-256: dbcbb08af0b984cc99469708968e8456bd4ccb4cfe3a60e908e7a9da85512774
font_02_sfnt_off00013b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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