Malicious PDF — malware analysis report

Static analysis result for SHA-256 560e697afadb9a0b…

MALICIOUS

PDF

94.8 KB Created: 2021-07-20 11:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 91d75bb8f1584d5c63a8a772fa008299 SHA-1: ba7be8f28e8ecc859d96320826699d019916f104 SHA-256: 560e697afadb9a0b5f9ce3845df57b0d1d7dda4cca38377f87a417d36475c416
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9918

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/2df87a5ba04febfc5be4242a934d3cbc/buwewobuziluxedazox.pdf In PDF document text
    • http://arcadia6465.com/clients/f/fc/fcac8d81e62e7f23ed02b02243def538/File/xizezavikowu.pdfIn PDF document text
    • http://udemadriatic.com/userfiles/files/24305620131.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/fusurokimirisa.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/168f8b4aacef7c18f1c9a617385c53f7/75563471090.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/a44d0bbb35d1c9e8324bfa5fb5173b3d/89261796770.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/vutikidojasukopivur.pdfIn PDF document text
    • http://cosonhuath.com/hinhanh_fckeditor/file/87684597681.pdfIn PDF document text
    • https://dp-silver.com/userfiles/file/10703787018.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ffe2c5358c6641a5f7a052570fc63898/3422591894.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/3ctbuv29qfus46bjs9dtlub4jm/zelegizekog.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad53c6321a0---81259533030.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/16079c168a04e9---gudoguzasarepefetu.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/230253595189.pdfIn PDF document text
    • http://exantusfamilyreunion.com/clients/9/96/968554593547eb574606130639276270/File/7102412707.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/47217c558611da01705216ccad38cd5e/37953638295.pdfIn PDF document text
    • http://pvhs1967.com/clients/a/aa/aa78cb05297cd93d8a9ab6bd1eb8a3c4/File/tixivenawa.pdfIn PDF document text
    • https://clumba-indoor.ru/files/files/xutewozowelinazukoronadag.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607434ce01601---15225291745.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/10191045816.pdfIn PDF document text
    • https://iveducentar.com/uploads/assets/file/kiravodiredaxol.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/hdeusp869tca5eu8h6r6une6d6/fevetal.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/da3dc27d6c1575042c440517ec56dd1d/16294147129.pdfIn PDF document text
    • http://doremimarlikinsaat.com/userfiles/file/2317196752.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160d03d4144972---zejivoraxitifibuwanupajik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=chances+of+getting+pregnant+from+precum+and+birth+controlPDF 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_off0000f97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001118d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118D 16396 bytes
SHA-256: 0d5ffd35431de3a46edebb3e7d04db42186100d4a60b404ad8ca180934dad6cb
font_02_sfnt_off000127a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A8 16692 bytes
SHA-256: 2333654b5e3fc2019bd345a43a6a9cd1358b2d2d82e00d51f51aee4cf8014d19
font_03_sfnt_off000152e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152E9 11336 bytes
SHA-256: b588e419561c8c73386d274ace5ac20fba260de0552c889424a21ff9733114e8