Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14ce62ebef5642c…

MALICIOUS

PDF

70.6 KB Created: 2021-09-05 02:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 67bf6883b8403c2948b21fff25df4aa1 SHA-1: 93d9d44c481df15430ab1bf90c490a260d17b04c SHA-256: d14ce62ebef5642c92cf63d60181e9035350597526183ae39a85d9634b8fd592
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, directing users to multiple compromised WordPress upload storage locations and disposable hosting sites. The embedded URLs suggest an attempt to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f41191298---xarimog.pdf In PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/27149648565.pdfIn PDF document text
    • http://drthchowdary.net/userfiles/file/xoxoduxipafanudip.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/bc174a2a5f6abc29032318b9ade6853c/48139009834.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/38539258995.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/dfac823462aa3e6da968c40d9e530097/zojedaporanedejix.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/34420199363.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078a08611a29---47107101418.pdfIn PDF document text
    • http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/14162842976.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/50f2b14b06b09460e4659eb90d063d24/54389164872.pdfIn PDF document text
    • http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/36536393613.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/mimolisadepedisutale.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/fbb28d192fe23e906ae72f76faf23cbd/98478600619.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/75836515673.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc4e60448---5910035178.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/8df4a35692c18ee8e843a4938c3b965f/53482631883.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///larifekirozulifevopene.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/95828599099.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/7ee7eb0f0aaa7eec458659a935c203b1/46939781289.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/mn2tt0eree5smmjr41clc17r8k/70783135912.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/legixurisoletujafaromusi.pdfIn PDF document text
    • http://ipllaser.in/uploads/siruvojabirafew.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/da8174f03e7825576f7c28c165a9ae88/besojeleronajafelon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=suunto+core+all+black+owners+manualPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BA 10792 bytes
SHA-256: 6d0e201f4d3e4c1c3f9268fd158013127ba79a1a5f7a5fcfb41a4d55c26e5d56
font_01_sfnt_off0000cbae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAE 15532 bytes
SHA-256: cd971858a6665a3779b1ca7b4b16e437aa60bf09627b22e38448e18f578ef495
font_02_sfnt_off0000f384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF384 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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